90904785 has 8 divisors (see below), whose sum is σ = 145447680. Its totient is φ = 48482544.

The previous prime is 90904777. The next prime is 90904789. The reversal of 90904785 is 58740909.

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

It is not a de Polignac number, because 90904785 - 2³ = 90904777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90904789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3030145 + ... + 3030174.

It is an arithmetic number, because the mean of its divisors is an integer number (18180960).

Almost surely, 2^90904785 is an apocalyptic number.

It is an amenable number.

90904785 is a deficient number, since it is larger than the sum of its proper divisors (54542895).

90904785 is a wasteful number, since it uses less digits than its factorization.

90904785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060327.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 90904785 is about 9534.4000860044. The cubic root of 90904785 is about 449.6372137762.

The spelling of 90904785 in words is "ninety million, nine hundred four thousand, seven hundred eighty-five".