90617665 has 8 divisors (see below), whose sum is σ = 108937728. Its totient is φ = 72363120.

The previous prime is 90617647. The next prime is 90617689. The reversal of 90617665 is 56671609.

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

It is not a de Polignac number, because 90617665 - 2¹⁷ = 90486593 is a prime.

It is a super-2 number, since 2×90617665² = 16423122420104450, which contains 22 as substring.

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, 13281 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (13617216).

Almost surely, 2^90617665 is an apocalyptic number.

It is an amenable number.

90617665 is a deficient number, since it is larger than the sum of its proper divisors (18320063).

90617665 is a wasteful number, since it uses less digits than its factorization.

90617665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32759.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 90617665 is about 9519.3311214602. The cubic root of 90617665 is about 449.1633260151.

The spelling of 90617665 in words is "ninety million, six hundred seventeen thousand, six hundred sixty-five".