68457817 has 8 divisors (see below), whose sum is σ = 72762560. Its totient is φ = 64223280.

The previous prime is 68457769. The next prime is 68457833. The reversal of 68457817 is 71875486.

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

It is a cyclic number.

It is not a de Polignac number, because 68457817 - 2⁷ = 68457689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68457217) 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 7 ways as a sum of consecutive naturals, for example, 15534 + ... + 19447.

It is an arithmetic number, because the mean of its divisors is an integer number (9095320).

Almost surely, 2^68457817 is an apocalyptic number.

It is an amenable number.

68457817 is a deficient number, since it is larger than the sum of its proper divisors (4304743).

68457817 is a wasteful number, since it uses less digits than its factorization.

68457817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35103.

The product of its digits is 376320, while the sum is 46.

The square root of 68457817 is about 8273.9239179485. The cubic root of 68457817 is about 409.0794675842.

The spelling of 68457817 in words is "sixty-eight million, four hundred fifty-seven thousand, eight hundred seventeen".