672845406 has 16 divisors (see below), whose sum is σ = 1346662800. Its totient is φ = 224119808.

The previous prime is 672845401. The next prime is 672845413. The reversal of 672845406 is 604548276.

672845406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672845401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31341 + ... + 48248.

It is an arithmetic number, because the mean of its divisors is an integer number (84166425).

Almost surely, 2^672845406 is an apocalyptic number.

672845406 is an abundant number, since it is smaller than the sum of its proper divisors (673817394).

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

672845406 is a wasteful number, since it uses less digits than its factorization.

672845406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81003.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 672845406 is about 25939.2637906321. The cubic root of 672845406 is about 876.2709827610.

The spelling of 672845406 in words is "six hundred seventy-two million, eight hundred forty-five thousand, four hundred six".