90635577 has 4 divisors (see below), whose sum is σ = 120847440. Its totient is φ = 60423716.

The previous prime is 90635513. The next prime is 90635581. The reversal of 90635577 is 77553609.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90635577 - 2⁶ = 90635513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90635507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15105927 + ... + 15105932.

It is an arithmetic number, because the mean of its divisors is an integer number (30211860).

Almost surely, 2^90635577 is an apocalyptic number.

It is an amenable number.

90635577 is a deficient number, since it is larger than the sum of its proper divisors (30211863).

90635577 is a wasteful number, since it uses less digits than its factorization.

90635577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30211862.

The product of its (nonzero) digits is 198450, while the sum is 42.

The square root of 90635577 is about 9520.2718973777. The cubic root of 90635577 is about 449.1929187862.

The spelling of 90635577 in words is "ninety million, six hundred thirty-five thousand, five hundred seventy-seven".