68974431 has 16 divisors (see below), whose sum is σ = 93140064. Its totient is φ = 45400064.

The previous prime is 68974429. The next prime is 68974439. The reversal of 68974431 is 13447986.

It is a cyclic number.

It is not a de Polignac number, because 68974431 - 2¹ = 68974429 is a prime.

It is a super-2 number, since 2×68974431² = 9514944263547522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68974439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105301 + ... + 105953.

It is an arithmetic number, because the mean of its divisors is an integer number (5821254).

Almost surely, 2^68974431 is an apocalyptic number.

68974431 is a deficient number, since it is larger than the sum of its proper divisors (24165633).

68974431 is a wasteful number, since it uses less digits than its factorization.

68974431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050.

The product of its digits is 145152, while the sum is 42.

The square root of 68974431 is about 8305.0846473712. The cubic root of 68974431 is about 410.1059234553.

The spelling of 68974431 in words is "sixty-eight million, nine hundred seventy-four thousand, four hundred thirty-one".