671479713 has 28 divisors (see below), whose sum is σ = 1009709028. Its totient is φ = 446342400.

The previous prime is 671479709. The next prime is 671479723. The reversal of 671479713 is 317974176.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 540423009 + 131056704 = 23247^2 + 11448^2 .

It is not a de Polignac number, because 671479713 - 2² = 671479709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671479723) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 291181 + ... + 293477.

Almost surely, 2^671479713 is an apocalyptic number.

It is an amenable number.

671479713 is a deficient number, since it is larger than the sum of its proper divisors (338229315).

671479713 is an equidigital number, since it uses as much as digits as its factorization.

671479713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2701 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 671479713 is about 25912.9255970838. The cubic root of 671479713 is about 875.6777173438.

The spelling of 671479713 in words is "six hundred seventy-one million, four hundred seventy-nine thousand, seven hundred thirteen".