90513665 has 16 divisors (see below), whose sum is σ = 120730176. Its totient is φ = 64584000.

The previous prime is 90513659. The next prime is 90513673. The reversal of 90513665 is 56631509.

It is a de Polignac number, because none of the positive numbers 2^k-90513665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12611 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (7545636).

Almost surely, 2^90513665 is an apocalyptic number.

It is an amenable number.

90513665 is a deficient number, since it is larger than the sum of its proper divisors (30216511).

90513665 is a wasteful number, since it uses less digits than its factorization.

90513665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31120.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 90513665 is about 9513.8669845652. The cubic root of 90513665 is about 448.9914284503.

The spelling of 90513665 in words is "ninety million, five hundred thirteen thousand, six hundred sixty-five".