672666066 has 32 divisors (see below), whose sum is σ = 1495771200. Its totient is φ = 224078400.

The previous prime is 672666011. The next prime is 672666077. The reversal of 672666066 is 660666276.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112041 + ... + 117891.

It is an arithmetic number, because the mean of its divisors is an integer number (46742850).

Almost surely, 2^672666066 is an apocalyptic number.

672666066 is an abundant number, since it is smaller than the sum of its proper divisors (823105134).

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

672666066 is a wasteful number, since it uses less digits than its factorization.

672666066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7991 (or 7985 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 672666066 is about 25935.8066386993. The cubic root of 672666066 is about 876.1931221802.

The spelling of 672666066 in words is "six hundred seventy-two million, six hundred sixty-six thousand, sixty-six".