672389642 has 4 divisors (see below), whose sum is σ = 1008584466. Its totient is φ = 336194820.

The previous prime is 672389629. The next prime is 672389657. The reversal of 672389642 is 246983276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 671898241 + 491401 = 25921^2 + 701^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168097409 + ... + 168097412.

Almost surely, 2^672389642 is an apocalyptic number.

672389642 is a deficient number, since it is larger than the sum of its proper divisors (336194824).

672389642 is a wasteful number, since it uses less digits than its factorization.

672389642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336194823.

The product of its digits is 870912, while the sum is 47.

The square root of 672389642 is about 25930.4770877822. The cubic root of 672389642 is about 876.0730854072.

The spelling of 672389642 in words is "six hundred seventy-two million, three hundred eighty-nine thousand, six hundred forty-two".