660535326 has 48 divisors (see below), whose sum is σ = 1587755520. Its totient is φ = 196766160.

The previous prime is 660535307. The next prime is 660535363. The reversal of 660535326 is 623535066.

It is a congruent number.

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, 16590 + ... + 39953.

It is an arithmetic number, because the mean of its divisors is an integer number (33078240).

Almost surely, 2^660535326 is an apocalyptic number.

660535326 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

660535326 is an abundant number, since it is smaller than the sum of its proper divisors (927220194).

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

660535326 is a wasteful number, since it uses less digits than its factorization.

660535326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56621 (or 56618 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

The square root of 660535326 is about 25700.8818136655. The cubic root of 660535326 is about 870.8941026117.

The spelling of 660535326 in words is "six hundred sixty million, five hundred thirty-five thousand, three hundred twenty-six".