666466404 has 24 divisors (see below), whose sum is σ = 1563780960. Its totient is φ = 220913664.

The previous prime is 666466393. The next prime is 666466433. The reversal of 666466404 is 404664666.

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, 152989 + ... + 157284.

It is an arithmetic number, because the mean of its divisors is an integer number (65157540).

Almost surely, 2^666466404 is an apocalyptic number.

It is an amenable number.

666466404 is an abundant number, since it is smaller than the sum of its proper divisors (897314556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666466404 is a wasteful number, since it uses less digits than its factorization.

666466404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310459 (or 310457 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 666466404 is about 25816.0106135708. The cubic root of 666466404 is about 873.4929831994.

The spelling of 666466404 in words is "six hundred sixty-six million, four hundred sixty-six thousand, four hundred four".