6550672664 has 16 divisors (see below), whose sum is σ = 12582085320. Its totient is φ = 3195449920.

The previous prime is 6550672649. The next prime is 6550672669. The reversal of 6550672664 is 4662760556.

It is a happy number.

It is a super-2 number, since 2×6550672664² = 85822624701753713792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550672669) 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, 9985454 + ... + 9986109.

Almost surely, 2^6550672664 is an apocalyptic number.

It is an amenable number.

6550672664 is a deficient number, since it is larger than the sum of its proper divisors (6031412656).

6550672664 is a wasteful number, since it uses less digits than its factorization.

6550672664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19971610 (or 19971606 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 6550672664 is about 80936.2259065741. The cubic root of 6550672664 is about 1871.0926787206.

The spelling of 6550672664 in words is "six billion, five hundred fifty million, six hundred seventy-two thousand, six hundred sixty-four".