6653691764 has 12 divisors (see below), whose sum is σ = 11747005284. Its totient is φ = 3297404544.

The previous prime is 6653691749. The next prime is 6653691767. The reversal of 6653691764 is 4671963566.

It can be written as a sum of positive squares in 2 ways, for example, as 2571504100 + 4082187664 = 50710^2 + 63892^2 .

It is a super-2 number, since 2×6653691764² = 88543228180642863392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653691767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7359827 + ... + 7360730.

It is an arithmetic number, because the mean of its divisors is an integer number (978917107).

Almost surely, 2^6653691764 is an apocalyptic number.

It is an amenable number.

6653691764 is a deficient number, since it is larger than the sum of its proper divisors (5093313520).

6653691764 is a wasteful number, since it uses less digits than its factorization.

6653691764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14720674 (or 14720672 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 53.

The square root of 6653691764 is about 81570.1646682168. The cubic root of 6653691764 is about 1880.8502797083.

The spelling of 6653691764 in words is "six billion, six hundred fifty-three million, six hundred ninety-one thousand, seven hundred sixty-four".