666322424 has 8 divisors (see below), whose sum is σ = 1249354560. Its totient is φ = 333161208.

The previous prime is 666322417. The next prime is 666322451. The reversal of 666322424 is 424223666.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41645144 + ... + 41645159.

It is an arithmetic number, because the mean of its divisors is an integer number (156169320).

Almost surely, 2^666322424 is an apocalyptic number.

It is an amenable number.

666322424 is a deficient number, since it is larger than the sum of its proper divisors (583032136).

666322424 is a wasteful number, since it uses less digits than its factorization.

666322424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83290309 (or 83290305 counting only the distinct ones).

The product of its digits is 82944, while the sum is 35.

The square root of 666322424 is about 25813.2218833682. The cubic root of 666322424 is about 873.4300770140.

The spelling of 666322424 in words is "six hundred sixty-six million, three hundred twenty-two thousand, four hundred twenty-four".