91062864 has 30 divisors (see below), whose sum is σ = 254849946. Its totient is φ = 30354240.

The previous prime is 91062847. The next prime is 91062887. The reversal of 91062864 is 46826019.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 1192464 = 9480^2 + 1092^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316047 + ... + 316334.

Almost surely, 2^91062864 is an apocalyptic number.

It is an amenable number.

91062864 is an abundant number, since it is smaller than the sum of its proper divisors (163787082).

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

91062864 is a wasteful number, since it uses less digits than its factorization.

91062864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632395 (or 632386 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 91062864 is about 9542.6864142127. The cubic root of 91062864 is about 449.8976952619.

The spelling of 91062864 in words is "ninety-one million, sixty-two thousand, eight hundred sixty-four".