90699885 has 16 divisors (see below), whose sum is σ = 161244480. Its totient is φ = 48373200.

The previous prime is 90699877. The next prime is 90699887. The reversal of 90699885 is 58899609.

It is not a de Polignac number, because 90699885 - 2³ = 90699877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90699887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335791 + ... + 336060.

It is an arithmetic number, because the mean of its divisors is an integer number (10077780).

Almost surely, 2^90699885 is an apocalyptic number.

It is an amenable number.

90699885 is a deficient number, since it is larger than the sum of its proper divisors (70544595).

90699885 is a wasteful number, since it uses less digits than its factorization.

90699885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671865 (or 671859 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 90699885 is about 9523.6487230473. The cubic root of 90699885 is about 449.2991311954.

The spelling of 90699885 in words is "ninety million, six hundred ninety-nine thousand, eight hundred eighty-five".