408323666 has 12 divisors (see below), whose sum is σ = 620355582. Its totient is φ = 201571344.

The previous prime is 408323651. The next prime is 408323677. The reversal of 408323666 is 666323804.

It can be written as a sum of positive squares in only one way, i.e., 344659225 + 63664441 = 18565^2 + 7979^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3875 + ... + 28838.

Almost surely, 2^408323666 is an apocalyptic number.

408323666 is a deficient number, since it is larger than the sum of its proper divisors (212031916).

408323666 is an equidigital number, since it uses as much as digits as its factorization.

408323666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32873 (or 32794 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 408323666 is about 20207.0202157567. The cubic root of 408323666 is about 741.8820282605.

The spelling of 408323666 in words is "four hundred eight million, three hundred twenty-three thousand, six hundred sixty-six".