672120564 has 12 divisors (see below), whose sum is σ = 1568281344. Its totient is φ = 224040184.

The previous prime is 672120541. The next prime is 672120569. The reversal of 672120564 is 465021276.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672120569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28005012 + ... + 28005035.

It is an arithmetic number, because the mean of its divisors is an integer number (130690112).

Almost surely, 2^672120564 is an apocalyptic number.

It is an amenable number.

672120564 is an abundant number, since it is smaller than the sum of its proper divisors (896160780).

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

672120564 is a wasteful number, since it uses less digits than its factorization.

672120564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56010054 (or 56010052 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 672120564 is about 25925.2881179747. The cubic root of 672120564 is about 875.9562070224.

The spelling of 672120564 in words is "six hundred seventy-two million, one hundred twenty thousand, five hundred sixty-four".