6551560764 has 72 divisors (see below), whose sum is σ = 19749649920. Its totient is φ = 1790487072.

The previous prime is 6551560661. The next prime is 6551560831. The reversal of 6551560764 is 4670651556.

6551560764 is a `hidden beast` number, since 6 + 5 + 515 + 60 + 76 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 559384 + ... + 570975.

Almost surely, 2^6551560764 is an apocalyptic number.

It is an amenable number.

6551560764 is an abundant number, since it is smaller than the sum of its proper divisors (13198089156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6551560764 is a wasteful number, since it uses less digits than its factorization.

6551560764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130399 (or 1130394 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 6551560764 is about 80941.7121390448. The cubic root of 6551560764 is about 1871.1772319873.

The spelling of 6551560764 in words is "six billion, five hundred fifty-one million, five hundred sixty thousand, seven hundred sixty-four".