90619665 has 32 divisors (see below), whose sum is σ = 152534016. Its totient is φ = 45876480.

The previous prime is 90619663. The next prime is 90619667. The reversal of 90619665 is 56691609.

It is an interprime number because it is at equal distance from previous prime (90619663) and next prime (90619667).

It is not a de Polignac number, because 90619665 - 2¹ = 90619663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90619663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22807 + ... + 26483.

It is an arithmetic number, because the mean of its divisors is an integer number (4766688).

Almost surely, 2^90619665 is an apocalyptic number.

It is an amenable number.

90619665 is a deficient number, since it is larger than the sum of its proper divisors (61914351).

90619665 is a wasteful number, since it uses less digits than its factorization.

90619665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3769.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 90619665 is about 9519.4361702782. The cubic root of 90619665 is about 449.1666304482.

The spelling of 90619665 in words is "ninety million, six hundred nineteen thousand, six hundred sixty-five".