131579646 has 16 divisors (see below), whose sum is σ = 287083008. Its totient is φ = 39872600.

The previous prime is 131579629. The next prime is 131579671. The reversal of 131579646 is 646975131.

It is a junction number, because it is equal to n+sod(n) for n = 131579598 and 131579607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996750 + ... + 996881.

It is an arithmetic number, because the mean of its divisors is an integer number (17942688).

Almost surely, 2^131579646 is an apocalyptic number.

131579646 is an abundant number, since it is smaller than the sum of its proper divisors (155503362).

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

131579646 is a wasteful number, since it uses less digits than its factorization.

131579646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993647.

The product of its digits is 136080, while the sum is 42.

The square root of 131579646 is about 11470.8171461322. The cubic root of 131579646 is about 508.6232842878.

The spelling of 131579646 in words is "one hundred thirty-one million, five hundred seventy-nine thousand, six hundred forty-six".