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68741511 = 348747051
BaseRepresentation
bin1000001100011…
…10100110000111
311210100102121220
410012032212013
5120044212021
610453211423
71463202366
oct406164607
9153312556
1068741511
1135891573
121b030b73
131131aa67
1491b57dd
15607ccc6
hex418e987

68741511 has 8 divisors (see below), whose sum is σ = 91845504. Its totient is φ = 45732600.

The previous prime is 68741507. The next prime is 68741527. The reversal of 68741511 is 11514786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68741511 - 22 = 68741507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68741111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22065 + ... + 24986.

It is an arithmetic number, because the mean of its divisors is an integer number (11480688).

Almost surely, 268741511 is an apocalyptic number.

68741511 is a deficient number, since it is larger than the sum of its proper divisors (23103993).

68741511 is a wasteful number, since it uses less digits than its factorization.

68741511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47541.

The product of its digits is 6720, while the sum is 33.

The square root of 68741511 is about 8291.0500541246. The cubic root of 68741511 is about 409.6437734711.

It can be divided in two parts, 6874 and 1511, that added together give a triangular number (8385 = T129).

The spelling of 68741511 in words is "sixty-eight million, seven hundred forty-one thousand, five hundred eleven".

Divisors: 1 3 487 1461 47051 141153 22913837 68741511