90553764 has 72 divisors (see below), whose sum is σ = 260275680. Its totient is φ = 24347904.

The previous prime is 90553751. The next prime is 90553787. The reversal of 90553764 is 46735509.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5467 + ... + 14525.

It is an arithmetic number, because the mean of its divisors is an integer number (3614940).

Almost surely, 2^90553764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90553764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130137840).

90553764 is an abundant number, since it is smaller than the sum of its proper divisors (169721916).

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

90553764 is a wasteful number, since it uses less digits than its factorization.

90553764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097 (or 9088 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 90553764 is about 9515.9741487669. The cubic root of 90553764 is about 449.0577221208.

The spelling of 90553764 in words is "ninety million, five hundred fifty-three thousand, seven hundred sixty-four".