672165642 has 16 divisors (see below), whose sum is σ = 1367117280. Its totient is φ = 220257552.

The previous prime is 672165607. The next prime is 672165667. The reversal of 672165642 is 246561276.

It is a self number, because there is not a number n which added to its sum of digits gives 672165642.

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 7 ways as a sum of consecutive naturals, for example, 949033 + ... + 949740.

It is an arithmetic number, because the mean of its divisors is an integer number (85444830).

Almost surely, 2^672165642 is an apocalyptic number.

672165642 is an abundant number, since it is smaller than the sum of its proper divisors (694951638).

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

672165642 is a wasteful number, since it uses less digits than its factorization.

672165642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898837.

The product of its digits is 120960, while the sum is 39.

The square root of 672165642 is about 25926.1574862146. The cubic root of 672165642 is about 875.9757895563.

The spelling of 672165642 in words is "six hundred seventy-two million, one hundred sixty-five thousand, six hundred forty-two".