68547913 has 12 divisors (see below), whose sum is σ = 82313472. Its totient is φ = 56858760.

The previous prime is 68547907. The next prime is 68547917. The reversal of 68547913 is 31974586.

It is not a de Polignac number, because 68547913 - 2²⁵ = 34993481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68547913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68547917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21045 + ... + 24082.

It is an arithmetic number, because the mean of its divisors is an integer number (6859456).

Almost surely, 2^68547913 is an apocalyptic number.

It is an amenable number.

68547913 is a deficient number, since it is larger than the sum of its proper divisors (13765559).

68547913 is a wasteful number, since it uses less digits than its factorization.

68547913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45172 (or 45165 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 68547913 is about 8279.3667028342. The cubic root of 68547913 is about 409.2588494209.

The spelling of 68547913 in words is "sixty-eight million, five hundred forty-seven thousand, nine hundred thirteen".