90845576836 has 27 divisors (see below), whose sum is σ = 184944229029. Its totient is φ = 38932010208.

The previous prime is 90845576797. The next prime is 90845576863. The reversal of 90845576836 is 63867554809.

The square root of 90845576836 is 301406.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14934306436 + 75911270400 = 122206^2 + 275520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4208920 + ... + 4230448.

Almost surely, 2^90845576836 is an apocalyptic number.

90845576836 is the 301406-th square number.

It is an amenable number.

90845576836 is an abundant number, since it is smaller than the sum of its proper divisors (94098652193).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90845576836 is an frugal number, since it uses more digits than its factorization.

90845576836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43076 (or 21538 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 90845576836 in words is "ninety billion, eight hundred forty-five million, five hundred seventy-six thousand, eight hundred thirty-six".