91982667 has 32 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 49552128.

The previous prime is 91982663. The next prime is 91982677. The reversal of 91982667 is 76628919.

It is not a de Polignac number, because 91982667 - 2² = 91982663 is a prime.

It is a super-2 number, since 2×91982667² = 16921622056865778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91982663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106903 + ... + 107759.

It is an arithmetic number, because the mean of its divisors is an integer number (4633200).

Almost surely, 2^91982667 is an apocalyptic number.

91982667 is a deficient number, since it is larger than the sum of its proper divisors (56279733).

91982667 is a wasteful number, since it uses less digits than its factorization.

91982667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its digits is 326592, while the sum is 48.

The square root of 91982667 is about 9590.7594589793. The cubic root of 91982667 is about 451.4073912750.

The spelling of 91982667 in words is "ninety-one million, nine hundred eighty-two thousand, six hundred sixty-seven".