68377431 has 4 divisors (see below), whose sum is σ = 91169912. Its totient is φ = 45584952.

The previous prime is 68377429. The next prime is 68377469. The reversal of 68377431 is 13477386.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68377431 - 2¹ = 68377429 is a prime.

It is a super-2 number, since 2×68377431² = 9350946140319522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68377431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68377411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11396236 + ... + 11396241.

It is an arithmetic number, because the mean of its divisors is an integer number (22792478).

Almost surely, 2^68377431 is an apocalyptic number.

68377431 is a deficient number, since it is larger than the sum of its proper divisors (22792481).

68377431 is a wasteful number, since it uses less digits than its factorization.

68377431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22792480.

The product of its digits is 84672, while the sum is 39.

The square root of 68377431 is about 8269.0646992269. The cubic root of 68377431 is about 408.9192855272.

The spelling of 68377431 in words is "sixty-eight million, three hundred seventy-seven thousand, four hundred thirty-one".