6560553631 has 4 divisors (see below), whose sum is σ = 6564806992. Its totient is φ = 6556300272.

The previous prime is 6560553619. The next prime is 6560553641. The reversal of 6560553631 is 1363550656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6560553631 is a prime.

It is a super-2 number, since 2×6560553631² = 86081727890454568322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6560553611) 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, 2124366 + ... + 2127451.

It is an arithmetic number, because the mean of its divisors is an integer number (1641201748).

Almost surely, 2^6560553631 is an apocalyptic number.

6560553631 is a deficient number, since it is larger than the sum of its proper divisors (4253361).

6560553631 is a wasteful number, since it uses less digits than its factorization.

6560553631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253360.

The product of its (nonzero) digits is 243000, while the sum is 40.

The square root of 6560553631 is about 80997.2445889365. The cubic root of 6560553631 is about 1872.0329850543.

The spelling of 6560553631 in words is "six billion, five hundred sixty million, five hundred fifty-three thousand, six hundred thirty-one".