673890366 has 16 divisors (see below), whose sum is σ = 1418716800. Its totient is φ = 212807448.

The previous prime is 673890359. The next prime is 673890377. The reversal of 673890366 is 663098376.

It is a happy number.

It is a super-2 number, since 2×673890366² = 908256450775227912, which contains 22 as substring.

It is a congruent number.

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, 2955546 + ... + 2955773.

It is an arithmetic number, because the mean of its divisors is an integer number (88669800).

Almost surely, 2^673890366 is an apocalyptic number.

673890366 is an abundant number, since it is smaller than the sum of its proper divisors (744826434).

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

673890366 is a wasteful number, since it uses less digits than its factorization.

673890366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911343.

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 673890366 is about 25959.3984136767. The cubic root of 673890366 is about 876.7243779003.

The spelling of 673890366 in words is "six hundred seventy-three million, eight hundred ninety thousand, three hundred sixty-six".