672157456 has 10 divisors (see below), whose sum is σ = 1302305102. Its totient is φ = 336078720.

The previous prime is 672157439. The next prime is 672157487. The reversal of 672157456 is 654751276.

It can be written as a sum of positive squares in only one way, i.e., 671639056 + 518400 = 25916^2 + 720^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21004905 + ... + 21004936.

Almost surely, 2^672157456 is an apocalyptic number.

It is an amenable number.

672157456 is a deficient number, since it is larger than the sum of its proper divisors (630147646).

672157456 is a wasteful number, since it uses less digits than its factorization.

672157456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42009849 (or 42009843 counting only the distinct ones).

The product of its digits is 352800, while the sum is 43.

The square root of 672157456 is about 25925.9996142868. Note that the first 3 decimals coincide. The cubic root of 672157456 is about 875.9722335048.

The spelling of 672157456 in words is "six hundred seventy-two million, one hundred fifty-seven thousand, four hundred fifty-six".