406662664 has 16 divisors (see below), whose sum is σ = 773874000. Its totient is φ = 200296272.

The previous prime is 406662647. The next prime is 406662713. The reversal of 406662664 is 466266604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378814 + ... + 379885.

It is an arithmetic number, because the mean of its divisors is an integer number (48367125).

Almost surely, 2^406662664 is an apocalyptic number.

It is an amenable number.

406662664 is a deficient number, since it is larger than the sum of its proper divisors (367211336).

406662664 is a wasteful number, since it uses less digits than its factorization.

406662664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758772 (or 758768 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 406662664 is about 20165.8787063693. The cubic root of 406662664 is about 740.8747046448.

The spelling of 406662664 in words is "four hundred six million, six hundred sixty-two thousand, six hundred sixty-four".