396662531 has 8 divisors (see below), whose sum is σ = 416305440. Its totient is φ = 377219392.

The previous prime is 396662527. The next prime is 396662543. The reversal of 396662531 is 135266693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 396662531 - 2² = 396662527 is a prime.

It is a super-2 number, since 2×396662531² = 314682326998651922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396662501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45866 + ... + 53823.

It is an arithmetic number, because the mean of its divisors is an integer number (52038180).

Almost surely, 2^396662531 is an apocalyptic number.

396662531 is a deficient number, since it is larger than the sum of its proper divisors (19642909).

396662531 is a wasteful number, since it uses less digits than its factorization.

396662531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99885.

The product of its digits is 174960, while the sum is 41.

The square root of 396662531 is about 19916.3885029390. The cubic root of 396662531 is about 734.7513503248.

The spelling of 396662531 in words is "three hundred ninety-six million, six hundred sixty-two thousand, five hundred thirty-one".