668580522 has 32 divisors (see below), whose sum is σ = 1450358784. Its totient is φ = 204633600.

The previous prime is 668580511. The next prime is 668580533. The reversal of 668580522 is 225085866.

It is an interprime number because it is at equal distance from previous prime (668580511) and next prime (668580533).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75754 + ... + 84117.

It is an arithmetic number, because the mean of its divisors is an integer number (45323712).

Almost surely, 2^668580522 is an apocalyptic number.

668580522 is an abundant number, since it is smaller than the sum of its proper divisors (781778262).

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

668580522 is a wasteful number, since it uses less digits than its factorization.

668580522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159934.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 668580522 is about 25856.9240630049. The cubic root of 668580522 is about 874.4156193786.

The spelling of 668580522 in words is "six hundred sixty-eight million, five hundred eighty thousand, five hundred twenty-two".