90564180 has 96 divisors (see below), whose sum is σ = 291078144. Its totient is φ = 20609664.

The previous prime is 90564169. The next prime is 90564181. The reversal of 90564180 is 8146509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90564181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160579 + ... + 161141.

It is an arithmetic number, because the mean of its divisors is an integer number (3032064).

Almost surely, 2^90564180 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 90564180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145539072).

90564180 is an abundant number, since it is smaller than the sum of its proper divisors (200513964).

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

90564180 is a wasteful number, since it uses less digits than its factorization.

90564180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 90564180 is about 9516.5214232933. The cubic root of 90564180 is about 449.0749391703.

The spelling of 90564180 in words is "ninety million, five hundred sixty-four thousand, one hundred eighty".