406072066 has 16 divisors (see below), whose sum is σ = 641743200. Its totient is φ = 192176928.

The previous prime is 406072031. The next prime is 406072099. The reversal of 406072066 is 660270604.

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, 44590 + ... + 52918.

It is an arithmetic number, because the mean of its divisors is an integer number (40108950).

Almost surely, 2^406072066 is an apocalyptic number.

406072066 is a deficient number, since it is larger than the sum of its proper divisors (235671134).

406072066 is a wasteful number, since it uses less digits than its factorization.

406072066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9633.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 406072066 is about 20151.2298880242. The cubic root of 406072066 is about 740.5158723319.

The spelling of 406072066 in words is "four hundred six million, seventy-two thousand, sixty-six".