131664654 has 24 divisors (see below), whose sum is σ = 311207832. Its totient is φ = 39898320.

The previous prime is 131664647. The next prime is 131664671. The reversal of 131664654 is 456466131.

It is a happy number.

131664654 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 646 + 5 + 4 = 666.

It is a super-2 number, since 2×131664654² = 34671162225879432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332289 + ... + 332684.

It is an arithmetic number, because the mean of its divisors is an integer number (12966993).

Almost surely, 2^131664654 is an apocalyptic number.

131664654 is an abundant number, since it is smaller than the sum of its proper divisors (179543178).

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

131664654 is a wasteful number, since it uses less digits than its factorization.

131664654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664992 (or 664989 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 131664654 is about 11474.5219508265. The cubic root of 131664654 is about 508.7327939817.

The spelling of 131664654 in words is "one hundred thirty-one million, six hundred sixty-four thousand, six hundred fifty-four".