90660570 has 128 divisors (see below), whose sum is σ = 292239360. Its totient is φ = 17383680.

The previous prime is 90660491. The next prime is 90660593. The reversal of 90660570 is 7506609.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 28521 + ... + 31539.

It is an arithmetic number, because the mean of its divisors is an integer number (2283120).

Almost surely, 2^90660570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90660570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146119680).

90660570 is an abundant number, since it is smaller than the sum of its proper divisors (201578790).

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

90660570 is a wasteful number, since it uses less digits than its factorization.

90660570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 90660570 is about 9521.5844269743. The cubic root of 90660570 is about 449.2342037033.

The spelling of 90660570 in words is "ninety million, six hundred sixty thousand, five hundred seventy".