672066056 has 16 divisors (see below), whose sum is σ = 1274283900. Its totient is φ = 332257024.

The previous prime is 672066029. The next prime is 672066071. The reversal of 672066056 is 650660276.

It can be written as a sum of positive squares in 2 ways, for example, as 658743556 + 13322500 = 25666^2 + 3650^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471245 + ... + 472668.

Almost surely, 2^672066056 is an apocalyptic number.

It is an amenable number.

672066056 is a deficient number, since it is larger than the sum of its proper divisors (602217844).

672066056 is a wasteful number, since it uses less digits than its factorization.

672066056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944008 (or 944004 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 672066056 is about 25924.2368450838. The cubic root of 672066056 is about 875.9325267909.

The spelling of 672066056 in words is "six hundred seventy-two million, sixty-six thousand, fifty-six".