90745864 has 32 divisors (see below), whose sum is σ = 196538400. Its totient is φ = 38821120.

The previous prime is 90745841. The next prime is 90745871. The reversal of 90745864 is 46854709.

It is a self number, because there is not a number n which added to its sum of digits gives 90745864.

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, 28834 + ... + 31825.

It is an arithmetic number, because the mean of its divisors is an integer number (6141825).

Almost surely, 2^90745864 is an apocalyptic number.

It is an amenable number.

90745864 is an abundant number, since it is smaller than the sum of its proper divisors (105792536).

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

90745864 is a wasteful number, since it uses less digits than its factorization.

90745864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60693 (or 60689 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 90745864 is about 9526.0623554541. The cubic root of 90745864 is about 449.3750402771.

The spelling of 90745864 in words is "ninety million, seven hundred forty-five thousand, eight hundred sixty-four".