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68544495 = 3351926723
BaseRepresentation
bin1000001010111…
…10011111101111
311202222102101000
410011132133233
5120021410440
610445051343
71461422115
oct405363757
9152872330
1068544495
1135767548
121ab56b53
131127c196
149163ab5
15603e730
hex415e7ef

68544495 has 32 divisors (see below), whose sum is σ = 128275200. Its totient is φ = 34631712.

The previous prime is 68544449. The next prime is 68544547. The reversal of 68544495 is 59444586.

68544495 is a `hidden beast` number, since 68 + 544 + 49 + 5 = 666.

It is not a de Polignac number, because 68544495 - 226 = 1435631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68544495.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10797 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (4008600).

Almost surely, 268544495 is an apocalyptic number.

68544495 is a deficient number, since it is larger than the sum of its proper divisors (59730705).

68544495 is a wasteful number, since it uses less digits than its factorization.

68544495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26756 (or 26750 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 68544495 is about 8279.1602835070. The cubic root of 68544495 is about 409.2520470257.

Subtracting from 68544495 its reverse (59444586), we obtain a palindrome (9099909).

The spelling of 68544495 in words is "sixty-eight million, five hundred forty-four thousand, four hundred ninety-five".

Divisors: 1 3 5 9 15 19 27 45 57 95 135 171 285 513 855 2565 26723 80169 133615 240507 400845 507737 721521 1202535 1523211 2538685 3607605 4569633 7616055 13708899 22848165 68544495