90866750 has 64 divisors (see below), whose sum is σ = 186181632. Its totient is φ = 33004800.

The previous prime is 90866747. The next prime is 90866761. The reversal of 90866750 is 5766809.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 90866698 and 90866707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237059 + ... + 237441.

It is an arithmetic number, because the mean of its divisors is an integer number (2909088).

Almost surely, 2^90866750 is an apocalyptic number.

90866750 is an abundant number, since it is smaller than the sum of its proper divisors (95314882).

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

90866750 is a wasteful number, since it uses less digits than its factorization.

90866750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 90866750 is about 9532.4052578560. The cubic root of 90866750 is about 449.5744949026.

The spelling of 90866750 in words is "ninety million, eight hundred sixty-six thousand, seven hundred fifty".