673664166 has 24 divisors (see below), whose sum is σ = 1668121104. Its totient is φ = 192475440.

The previous prime is 673664137. The next prime is 673664177. The reversal of 673664166 is 661466376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2673145 + ... + 2673396.

It is an arithmetic number, because the mean of its divisors is an integer number (69505046).

Almost surely, 2^673664166 is an apocalyptic number.

673664166 is an abundant number, since it is smaller than the sum of its proper divisors (994456938).

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

673664166 is a wasteful number, since it uses less digits than its factorization.

673664166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346556 (or 5346553 counting only the distinct ones).

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

The square root of 673664166 is about 25955.0412444288. The cubic root of 673664166 is about 876.6262723046.

The spelling of 673664166 in words is "six hundred seventy-three million, six hundred sixty-four thousand, one hundred sixty-six".