672990815 has 16 divisors (see below), whose sum is σ = 977251392. Its totient is φ = 434333184.

The previous prime is 672990803. The next prime is 672990839. The reversal of 672990815 is 518099276.

It is a cyclic number.

It is not a de Polignac number, because 672990815 - 2⁶ = 672990751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672990815.

It is a congruent number.

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, 564944 + ... + 566133.

It is an arithmetic number, because the mean of its divisors is an integer number (61078212).

Almost surely, 2^672990815 is an apocalyptic number.

672990815 is a deficient number, since it is larger than the sum of its proper divisors (304260577).

672990815 is a wasteful number, since it uses less digits than its factorization.

672990815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131106.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 672990815 is about 25942.0665136762. The cubic root of 672990815 is about 876.3341020197.

The spelling of 672990815 in words is "six hundred seventy-two million, nine hundred ninety thousand, eight hundred fifteen".