68444631 has 12 divisors (see below), whose sum is σ = 104068120. Its totient is φ = 43228080.

The previous prime is 68444627. The next prime is 68444647. The reversal of 68444631 is 13644486.

It is not a de Polignac number, because 68444631 - 2² = 68444627 is a prime.

It is a super-2 number, since 2×68444631² = 9369335025452322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68444671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199960 + ... + 200301.

Almost surely, 2^68444631 is an apocalyptic number.

68444631 is a deficient number, since it is larger than the sum of its proper divisors (35623489).

68444631 is a wasteful number, since it uses less digits than its factorization.

68444631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400286 (or 400283 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 68444631 is about 8273.1270387925. The cubic root of 68444631 is about 409.0532009553.

The spelling of 68444631 in words is "sixty-eight million, four hundred forty-four thousand, six hundred thirty-one".