672339979 has 8 divisors (see below), whose sum is σ = 701851392. Its totient is φ = 642851880.

The previous prime is 672339971. The next prime is 672339991. The reversal of 672339979 is 979933276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672339979 - 2³ = 672339971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672339971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80452 + ... + 88414.

It is an arithmetic number, because the mean of its divisors is an integer number (87731424).

Almost surely, 2^672339979 is an apocalyptic number.

672339979 is a deficient number, since it is larger than the sum of its proper divisors (29511413).

672339979 is a wasteful number, since it uses less digits than its factorization.

672339979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11657.

The product of its digits is 3857868, while the sum is 55.

The square root of 672339979 is about 25929.5194517754. The cubic root of 672339979 is about 876.0515158260.

The spelling of 672339979 in words is "six hundred seventy-two million, three hundred thirty-nine thousand, nine hundred seventy-nine".