90664715 has 8 divisors (see below), whose sum is σ = 110850768. Its totient is φ = 71163040.

The previous prime is 90664709. The next prime is 90664733. The reversal of 90664715 is 51746609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90664715 - 2¹⁰ = 90663691 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170801 + ... + 171330.

It is an arithmetic number, because the mean of its divisors is an integer number (13856346).

Almost surely, 2^90664715 is an apocalyptic number.

90664715 is a deficient number, since it is larger than the sum of its proper divisors (20186053).

90664715 is a wasteful number, since it uses less digits than its factorization.

90664715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342189.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 90664715 is about 9521.8020878403. The cubic root of 90664715 is about 449.2410499261.

The spelling of 90664715 in words is "ninety million, six hundred sixty-four thousand, seven hundred fifteen".