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68496539 = 193605081
BaseRepresentation
bin1000001010100…
…10110010011011
311202212222120212
410011102302123
5120013342124
610444041335
71461132236
oct405226233
9152788525
1068496539
1135734511
121ab3324b
13112633c7
14915041d
15603040e
hex4152c9b

68496539 has 4 divisors (see below), whose sum is σ = 72101640. Its totient is φ = 64891440.

The previous prime is 68496529. The next prime is 68496541. The reversal of 68496539 is 93569486.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68496539 - 24 = 68496523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68496529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1802522 + ... + 1802559.

It is an arithmetic number, because the mean of its divisors is an integer number (18025410).

Almost surely, 268496539 is an apocalyptic number.

68496539 is a deficient number, since it is larger than the sum of its proper divisors (3605101).

68496539 is a wasteful number, since it uses less digits than its factorization.

68496539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605100.

The product of its digits is 1399680, while the sum is 50.

The square root of 68496539 is about 8276.2635893258. The cubic root of 68496539 is about 409.1565826611.

The spelling of 68496539 in words is "sixty-eight million, four hundred ninety-six thousand, five hundred thirty-nine".

Divisors: 1 19 3605081 68496539