68965913 has 4 divisors (see below), whose sum is σ = 69005568. Its totient is φ = 68926260.

The previous prime is 68965909. The next prime is 68965927. The reversal of 68965913 is 31956986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68965913 - 2² = 68965909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68965993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17093 + ... + 20738.

It is an arithmetic number, because the mean of its divisors is an integer number (17251392).

Almost surely, 2^68965913 is an apocalyptic number.

It is an amenable number.

68965913 is a deficient number, since it is larger than the sum of its proper divisors (39655).

68965913 is a wasteful number, since it uses less digits than its factorization.

68965913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39654.

The product of its digits is 349920, while the sum is 47.

The square root of 68965913 is about 8304.5718131641. The cubic root of 68965913 is about 410.0890407447.

The spelling of 68965913 in words is "sixty-eight million, nine hundred sixty-five thousand, nine hundred thirteen".