406703666666 has 64 divisors (see below), whose sum is σ = 726634540800. Its totient is φ = 168622080000.

The previous prime is 406703666659. The next prime is 406703666687. The reversal of 406703666666 is 666666307604.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227610 + ... + 2403258.

It is an arithmetic number, because the mean of its divisors is an integer number (11353664700).

Almost surely, 2^406703666666 is an apocalyptic number.

406703666666 is a deficient number, since it is larger than the sum of its proper divisors (319930874134).

406703666666 is a wasteful number, since it uses less digits than its factorization.

406703666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175871.

The product of its (nonzero) digits is 23514624, while the sum is 56.

The spelling of 406703666666 in words is "four hundred six billion, seven hundred three million, six hundred sixty-six thousand, six hundred sixty-six".