90723577 has 16 divisors (see below), whose sum is σ = 113329152. Its totient is φ = 70824960.

The previous prime is 90723557. The next prime is 90723637. The reversal of 90723577 is 77532709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90723577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90723517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8608 + ... + 15985.

It is an arithmetic number, because the mean of its divisors is an integer number (7083072).

Almost surely, 2^90723577 is an apocalyptic number.

It is an amenable number.

90723577 is a deficient number, since it is larger than the sum of its proper divisors (22605575).

90723577 is a wasteful number, since it uses less digits than its factorization.

90723577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24648.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 90723577 is about 9524.8924928316. The cubic root of 90723577 is about 449.3382487323.

The spelling of 90723577 in words is "ninety million, seven hundred twenty-three thousand, five hundred seventy-seven".