90690605284 has 12 divisors (see below), whose sum is σ = 159127318000. Its totient is φ = 45225657288.

The previous prime is 90690605281. The next prime is 90690605311. The reversal of 90690605284 is 48250609609.

It is not an unprimeable number, because it can be changed into a prime (90690605281) 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, 29909634 + ... + 29912665.

Almost surely, 2^90690605284 is an apocalyptic number.

It is an amenable number.

90690605284 is a deficient number, since it is larger than the sum of its proper divisors (68436712716).

90690605284 is a wasteful number, since it uses less digits than its factorization.

90690605284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59822682 (or 59822680 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 90690605284 in words is "ninety billion, six hundred ninety million, six hundred five thousand, two hundred eighty-four".