672291279 has 32 divisors (see below), whose sum is σ = 1089100800. Its totient is φ = 406486080.

The previous prime is 672291271. The next prime is 672291281. The reversal of 672291279 is 972192276.

It is not a de Polignac number, because 672291279 - 2³ = 672291271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672291271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135067 + ... + 139955.

It is an arithmetic number, because the mean of its divisors is an integer number (34034400).

Almost surely, 2^672291279 is an apocalyptic number.

672291279 is a deficient number, since it is larger than the sum of its proper divisors (416809521).

672291279 is a wasteful number, since it uses less digits than its factorization.

672291279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372 (or 5366 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 672291279 is about 25928.5803506478. The cubic root of 672291279 is about 876.0303634625.

The spelling of 672291279 in words is "six hundred seventy-two million, two hundred ninety-one thousand, two hundred seventy-nine".