7647045256 has 16 divisors (see below), whose sum is σ = 14348765340. Its totient is φ = 3820707840.

The previous prime is 7647045253. The next prime is 7647045299. The reversal of 7647045256 is 6525407467.

It can be written as a sum of positive squares in 2 ways, for example, as 7644704356 + 2340900 = 87434^2 + 1530^2 .

It is a super-2 number, since 2×7647045256² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7647045251) 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, 340281 + ... + 362056.

Almost surely, 2^7647045256 is an apocalyptic number.

It is an amenable number.

7647045256 is a deficient number, since it is larger than the sum of its proper divisors (6701720084).

7647045256 is a wasteful number, since it uses less digits than its factorization.

7647045256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703704 (or 703700 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The square root of 7647045256 is about 87447.3856441689. The cubic root of 7647045256 is about 1970.1436208175.

The spelling of 7647045256 in words is "seven billion, six hundred forty-seven million, forty-five thousand, two hundred fifty-six".