90684692 has 18 divisors (see below), whose sum is σ = 184608522. Its totient is φ = 38864784.

The previous prime is 90684691. The next prime is 90684709. The reversal of 90684692 is 29648609.

It can be written as a sum of positive squares in only one way, i.e., 78039556 + 12645136 = 8834^2 + 3556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90684691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 231143 + ... + 231534.

It is an arithmetic number, because the mean of its divisors is an integer number (10256029).

Almost surely, 2^90684692 is an apocalyptic number.

It is an amenable number.

90684692 is an abundant number, since it is smaller than the sum of its proper divisors (93923830).

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

90684692 is a wasteful number, since it uses less digits than its factorization.

90684692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462695 (or 462686 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 90684692 is about 9522.8510436738. The cubic root of 90684692 is about 449.2740426561.

The spelling of 90684692 in words is "ninety million, six hundred eighty-four thousand, six hundred ninety-two".