91659672 has 48 divisors (see below), whose sum is σ = 267343440. Its totient is φ = 28202688.

The previous prime is 91659593. The next prime is 91659683. The reversal of 91659672 is 27695619.

It is a happy number.

It is a super-2 number, since 2×91659672² = 16802990942295168, 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, 48028 + ... + 49899.

It is an arithmetic number, because the mean of its divisors is an integer number (5569655).

Almost surely, 2^91659672 is an apocalyptic number.

It is an amenable number.

91659672 is an abundant number, since it is smaller than the sum of its proper divisors (175683768).

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

91659672 is a wasteful number, since it uses less digits than its factorization.

91659672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97952 (or 97945 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 91659672 is about 9573.9057860416. The cubic root of 91659672 is about 450.8784027553.

The spelling of 91659672 in words is "ninety-one million, six hundred fifty-nine thousand, six hundred seventy-two".