406664627831 has 24 divisors (see below), whose sum is σ = 532711457280. Its totient is φ = 306659530800.

The previous prime is 406664627827. The next prime is 406664627833. The reversal of 406664627831 is 138726466604.

It is not a de Polignac number, because 406664627831 - 2² = 406664627827 is a prime.

It is a super-2 number, since 2×406664627831² (a number of 24 digits) 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 (406664627833) 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, 12152321 + ... + 12185738.

It is an arithmetic number, because the mean of its divisors is an integer number (22196310720).

Almost surely, 2^406664627831 is an apocalyptic number.

406664627831 is a deficient number, since it is larger than the sum of its proper divisors (126046829449).

406664627831 is a wasteful number, since it uses less digits than its factorization.

406664627831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24338115 (or 24338108 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 406664627831 in words is "four hundred six billion, six hundred sixty-four million, six hundred twenty-seven thousand, eight hundred thirty-one".