68864131 has 8 divisors (see below), whose sum is σ = 78901344. Its totient is φ = 58876800.

The previous prime is 68864111. The next prime is 68864143. The reversal of 68864131 is 13146886.

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 68864131 - 2²⁵ = 35309699 is a prime.

It is a super-2 number, since 2×68864131² = 9484537076770322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68864111) 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, 9460 + ... + 15073.

It is an arithmetic number, because the mean of its divisors is an integer number (9862668).

Almost surely, 2^68864131 is an apocalyptic number.

68864131 is a deficient number, since it is larger than the sum of its proper divisors (10037213).

68864131 is a wasteful number, since it uses less digits than its factorization.

68864131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24941.

The product of its digits is 27648, while the sum is 37.

The square root of 68864131 is about 8298.4414801817. The cubic root of 68864131 is about 409.8872007760.

The spelling of 68864131 in words is "sixty-eight million, eight hundred sixty-four thousand, one hundred thirty-one".