406664627832 has 96 divisors (see below), whose sum is σ = 1166389988400. Its totient is φ = 127557061632.

The previous prime is 406664627827. The next prime is 406664627833. The reversal of 406664627832 is 238726466604.

It is a super-2 number, since 2×406664627832² (a number of 24 digits) contains 22 as substring.

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, 7152894 + ... + 7209522.

Almost surely, 2^406664627832 is an apocalyptic number.

It is an amenable number.

406664627832 is an abundant number, since it is smaller than the sum of its proper divisors (759725360568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406664627832 is a wasteful number, since it uses less digits than its factorization.

406664627832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62525 (or 62518 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 406664627832 in words is "four hundred six billion, six hundred sixty-four million, six hundred twenty-seven thousand, eight hundred thirty-two".