666452312 has 32 divisors (see below), whose sum is σ = 1262553600. Its totient is φ = 329785344.

The previous prime is 666452299. The next prime is 666452329. The reversal of 666452312 is 213254666.

It is a happy number.

It is a congruent number.

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, 780878 + ... + 781730.

It is an arithmetic number, because the mean of its divisors is an integer number (39454800).

Almost surely, 2^666452312 is an apocalyptic number.

It is an amenable number.

666452312 is a deficient number, since it is larger than the sum of its proper divisors (596101288).

666452312 is a wasteful number, since it uses less digits than its factorization.

666452312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1751 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 666452312 is about 25815.7376807249. The cubic root of 666452312 is about 873.4868266750.

The spelling of 666452312 in words is "six hundred sixty-six million, four hundred fifty-two thousand, three hundred twelve".