6656732164 has 6 divisors (see below), whose sum is σ = 11649281294. Its totient is φ = 3328366080.

The previous prime is 6656732141. The next prime is 6656732167. The reversal of 6656732164 is 4612376566.

It can be written as a sum of positive squares in only one way, i.e., 6575588100 + 81144064 = 81090^2 + 9008^2 .

It is not an unprimeable number, because it can be changed into a prime (6656732167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832091517 + ... + 832091524.

Almost surely, 2^6656732164 is an apocalyptic number.

It is an amenable number.

6656732164 is a deficient number, since it is larger than the sum of its proper divisors (4992549130).

6656732164 is a wasteful number, since it uses less digits than its factorization.

6656732164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664183045 (or 1664183043 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The square root of 6656732164 is about 81588.7992557802. The cubic root of 6656732164 is about 1881.1367205087.

The spelling of 6656732164 in words is "six billion, six hundred fifty-six million, seven hundred thirty-two thousand, one hundred sixty-four".