672879945 has 32 divisors (see below), whose sum is σ = 1090582272. Its totient is φ = 354235392.

The previous prime is 672879943. The next prime is 672879947. The reversal of 672879945 is 549978276.

It is an interprime number because it is at equal distance from previous prime (672879943) and next prime (672879947).

It is not a de Polignac number, because 672879945 - 2¹ = 672879943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672879943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 705589 + ... + 706541.

It is an arithmetic number, because the mean of its divisors is an integer number (34080696).

Almost surely, 2^672879945 is an apocalyptic number.

It is an amenable number.

672879945 is a deficient number, since it is larger than the sum of its proper divisors (417702327).

672879945 is a wasteful number, since it uses less digits than its factorization.

672879945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521.

The product of its digits is 7620480, while the sum is 57.

The square root of 672879945 is about 25939.9295488635. The cubic root of 672879945 is about 876.2859763021.

The spelling of 672879945 in words is "six hundred seventy-two million, eight hundred seventy-nine thousand, nine hundred forty-five".