666036522 has 24 divisors (see below), whose sum is σ = 1457093664. Its totient is φ = 219856104.

The previous prime is 666036493. The next prime is 666036529. The reversal of 666036522 is 225630666.

It is not an unprimeable number, because it can be changed into a prime (666036529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177768 + ... + 181475.

It is an arithmetic number, because the mean of its divisors is an integer number (60712236).

Almost surely, 2^666036522 is an apocalyptic number.

666036522 is an abundant number, since it is smaller than the sum of its proper divisors (791057142).

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

666036522 is a wasteful number, since it uses less digits than its factorization.

666036522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359354 (or 359351 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 666036522 is about 25807.6833908044. The cubic root of 666036522 is about 873.3051369345.

The spelling of 666036522 in words is "six hundred sixty-six million, thirty-six thousand, five hundred twenty-two".