7656065280 has 108 divisors (see below), whose sum is σ = 26489228220. Its totient is φ = 2041614336.

The previous prime is 7656065267. The next prime is 7656065281. The reversal of 7656065280 is 825606567.

7656065280 is a `hidden beast` number, since 7 + 6 + 560 + 6 + 5 + 2 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1984167936 + 5671897344 = 44544^2 + 75312^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7656065281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320775 + ... + 343814.

Almost surely, 2^7656065280 is an apocalyptic number.

It is an amenable number.

7656065280 is an abundant number, since it is smaller than the sum of its proper divisors (18833162940).

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

7656065280 is a wasteful number, since it uses less digits than its factorization.

7656065280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664616 (or 664599 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 7656065280 is about 87498.9444507761. The cubic root of 7656065280 is about 1970.9179399434.

The spelling of 7656065280 in words is "seven billion, six hundred fifty-six million, sixty-five thousand, two hundred eighty".