6297715661 has 32 divisors (see below), whose sum is σ = 7090070400. Its totient is φ = 5568030720.

The previous prime is 6297715649. The next prime is 6297715679. The reversal of 6297715661 is 1665177926.

It is a cyclic number.

It is not a de Polignac number, because 6297715661 - 2¹⁰ = 6297714637 is a prime.

It is a super-2 number, since 2×6297715661² = 79322445093609333842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6297717661) 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, 2551550 + ... + 2554016.

It is an arithmetic number, because the mean of its divisors is an integer number (221564700).

Almost surely, 2^6297715661 is an apocalyptic number.

It is an amenable number.

6297715661 is a deficient number, since it is larger than the sum of its proper divisors (792354739).

6297715661 is a wasteful number, since it uses less digits than its factorization.

6297715661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669.

The product of its digits is 952560, while the sum is 50.

The square root of 6297715661 is about 79358.1480441675. The cubic root of 6297715661 is about 1846.6914970393.

The spelling of 6297715661 in words is "six billion, two hundred ninety-seven million, seven hundred fifteen thousand, six hundred sixty-one".