90164895 has 32 divisors (see below), whose sum is σ = 150528000. Its totient is φ = 46033920.

The previous prime is 90164887. The next prime is 90164903. The reversal of 90164895 is 59846109.

It is an interprime number because it is at equal distance from previous prime (90164887) and next prime (90164903).

It is not a de Polignac number, because 90164895 - 2³ = 90164887 is a prime.

It is a super-2 number, since 2×90164895² = 16259416580722050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44106 + ... + 46104.

It is an arithmetic number, because the mean of its divisors is an integer number (4704000).

Almost surely, 2^90164895 is an apocalyptic number.

90164895 is a deficient number, since it is larger than the sum of its proper divisors (60363105).

90164895 is a wasteful number, since it uses less digits than its factorization.

90164895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 90164895 is about 9495.5197330109. The cubic root of 90164895 is about 448.4139970240.

The spelling of 90164895 in words is "ninety million, one hundred sixty-four thousand, eight hundred ninety-five".