671975279 has 2 divisors, whose sum is σ = 671975280. Its totient is φ = 671975278.

The previous prime is 671975231. The next prime is 671975323. The reversal of 671975279 is 972579176.

671975279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671975279 - 2⁸ = 671975023 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671975279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671975219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335987639 + 335987640.

It is an arithmetic number, because the mean of its divisors is an integer number (335987640).

Almost surely, 2^671975279 is an apocalyptic number.

671975279 is a deficient number, since it is larger than the sum of its proper divisors (1).

671975279 is an equidigital number, since it uses as much as digits as its factorization.

671975279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1666980, while the sum is 53.

The square root of 671975279 is about 25922.4859726069. The cubic root of 671975279 is about 875.8930871621.

The spelling of 671975279 in words is "six hundred seventy-one million, nine hundred seventy-five thousand, two hundred seventy-nine".