666426952 has 32 divisors (see below), whose sum is σ = 1273132800. Its totient is φ = 326952000.

The previous prime is 666426941. The next prime is 666426953. The reversal of 666426952 is 259624666.

It is not an unprimeable number, because it can be changed into a prime (666426953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232327 + ... + 235177.

It is an arithmetic number, because the mean of its divisors is an integer number (39785400).

Almost surely, 2^666426952 is an apocalyptic number.

It is an amenable number.

666426952 is a deficient number, since it is larger than the sum of its proper divisors (606705848).

666426952 is a wasteful number, since it uses less digits than its factorization.

666426952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3393 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 666426952 is about 25815.2465027937. The cubic root of 666426952 is about 873.4757471592.

The spelling of 666426952 in words is "six hundred sixty-six million, four hundred twenty-six thousand, nine hundred fifty-two".