666352452 has 24 divisors (see below), whose sum is σ = 1559236896. Its totient is φ = 221486848.

The previous prime is 666352447. The next prime is 666352483. The reversal of 666352452 is 254253666.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 666352452.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74418 + ... + 82889.

It is an arithmetic number, because the mean of its divisors is an integer number (64968204).

Almost surely, 2^666352452 is an apocalyptic number.

It is an amenable number.

666352452 is an abundant number, since it is smaller than the sum of its proper divisors (892884444).

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

666352452 is a wasteful number, since it uses less digits than its factorization.

666352452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157667 (or 157665 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 666352452 is about 25813.8035167234. The cubic root of 666352452 is about 873.4431972710.

The spelling of 666352452 in words is "six hundred sixty-six million, three hundred fifty-two thousand, four hundred fifty-two".