6947722609 has 27 divisors (see below), whose sum is σ = 7586742891. Its totient is φ = 6361500960.

The previous prime is 6947722603. The next prime is 6947722627. The reversal of 6947722609 is 9062277496.

It is a happy number.

The square root of 6947722609 is 83353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 334780209 + 6612942400 = 18297^2 + 81320^2 .

It is not a de Polignac number, because 6947722609 - 2⁵ = 6947722577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6947722603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 64931934 + ... + 64932040.

Almost surely, 2^6947722609 is an apocalyptic number.

6947722609 is the 83353-rd square number.

6947722609 is the 41677-th centered octagonal number.

It is an amenable number.

6947722609 is a deficient number, since it is larger than the sum of its proper divisors (639020282).

6947722609 is an equidigital number, since it uses as much as digits as its factorization.

6947722609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 52.

The cubic root of 6947722609 is about 1908.1572286293.

The spelling of 6947722609 in words is "six billion, nine hundred forty-seven million, seven hundred twenty-two thousand, six hundred nine".