6715407691 has 4 divisors (see below), whose sum is σ = 6790861800. Its totient is φ = 6639953584.

The previous prime is 6715407667. The next prime is 6715407701. The reversal of 6715407691 is 1967045176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6715407691 - 2⁵ = 6715407659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6715407641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37726921 + ... + 37727098.

It is an arithmetic number, because the mean of its divisors is an integer number (1697715450).

Almost surely, 2^6715407691 is an apocalyptic number.

6715407691 is a deficient number, since it is larger than the sum of its proper divisors (75454109).

6715407691 is an equidigital number, since it uses as much as digits as its factorization.

6715407691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75454108.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 6715407691 is about 81947.5911238396. The cubic root of 6715407691 is about 1886.6476309051.

The spelling of 6715407691 in words is "six billion, seven hundred fifteen million, four hundred seven thousand, six hundred ninety-one".