90064665 has 48 divisors (see below), whose sum is σ = 164166912. Its totient is φ = 45589632.

The previous prime is 90064651. The next prime is 90064673. The reversal of 90064665 is 56646009.

It is a happy number.

90064665 is a `hidden beast` number, since 9 + 0 + 0 + 646 + 6 + 5 = 666.

It is not a de Polignac number, because 90064665 - 2⁸ = 90064409 is a prime.

It is a super-2 number, since 2×90064665² = 16223287763124450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 178804 + ... + 179306.

It is an arithmetic number, because the mean of its divisors is an integer number (3420144).

Almost surely, 2^90064665 is an apocalyptic number.

It is an amenable number.

90064665 is a deficient number, since it is larger than the sum of its proper divisors (74102247).

90064665 is a wasteful number, since it uses less digits than its factorization.

90064665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 90064665 is about 9490.2405132852. The cubic root of 90064665 is about 448.2477786042.

The spelling of 90064665 in words is "ninety million, sixty-four thousand, six hundred sixty-five".