649922031 has 24 divisors (see below), whose sum is σ = 1025738064. Its totient is φ = 393269760.

The previous prime is 649922027. The next prime is 649922033. The reversal of 649922031 is 130229946.

649922031 is a `hidden beast` number, since 649 + 9 + 2 + 2 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 649922031 - 2² = 649922027 is a prime.

It is a super-2 number, since 2×649922031² = 844797292758329922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649922033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62175 + ... + 71871.

It is an arithmetic number, because the mean of its divisors is an integer number (42739086).

Almost surely, 2^649922031 is an apocalyptic number.

649922031 is a deficient number, since it is larger than the sum of its proper divisors (375816033).

649922031 is a wasteful number, since it uses less digits than its factorization.

649922031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10391 (or 10388 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 649922031 is about 25493.5684242124. The cubic root of 649922031 is about 866.2044681627.

The spelling of 649922031 in words is "six hundred forty-nine million, nine hundred twenty-two thousand, thirty-one".