68644317 has 32 divisors (see below), whose sum is σ = 112665600. Its totient is φ = 36281088.

The previous prime is 68644313. The next prime is 68644319. The reversal of 68644317 is 71344686.

It is not a de Polignac number, because 68644317 - 2² = 68644313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68644313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19434 + ... + 22692.

It is an arithmetic number, because the mean of its divisors is an integer number (3520800).

Almost surely, 2^68644317 is an apocalyptic number.

It is an amenable number.

68644317 is a deficient number, since it is larger than the sum of its proper divisors (44021283).

68644317 is a wasteful number, since it uses less digits than its factorization.

68644317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345.

The product of its digits is 96768, while the sum is 39.

The square root of 68644317 is about 8285.1866001919. The cubic root of 68644317 is about 409.4506165468.

The spelling of 68644317 in words is "sixty-eight million, six hundred forty-four thousand, three hundred seventeen".