68458931 has 8 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 66837448.

The previous prime is 68458927. The next prime is 68458963. The reversal of 68458931 is 13985486.

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 68458931 - 2² = 68458927 is a prime.

It is a super-2 number, since 2×68458931² = 9373250467325522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68454931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20390 + ... + 23508.

It is an arithmetic number, because the mean of its divisors is an integer number (8760960).

Almost surely, 2^68458931 is an apocalyptic number.

68458931 is a deficient number, since it is larger than the sum of its proper divisors (1628749).

68458931 is a wasteful number, since it uses less digits than its factorization.

68458931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633.

The product of its digits is 207360, while the sum is 44.

The square root of 68458931 is about 8273.9912376072. The cubic root of 68458931 is about 409.0816865276.

The spelling of 68458931 in words is "sixty-eight million, four hundred fifty-eight thousand, nine hundred thirty-one".