6522998660 has 24 divisors (see below), whose sum is σ = 13718679576. Its totient is φ = 2605317120.

The previous prime is 6522998633. The next prime is 6522998687. The reversal of 6522998660 is 668992256.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6522998633) and next prime (6522998687).

It can be written as a sum of positive squares in 4 ways, for example, as 772506436 + 5750492224 = 27794^2 + 75832^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228851 + ... + 255770.

It is an arithmetic number, because the mean of its divisors is an integer number (571611649).

Almost surely, 2^6522998660 is an apocalyptic number.

It is an amenable number.

6522998660 is an abundant number, since it is smaller than the sum of its proper divisors (7195680916).

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

6522998660 is a wasteful number, since it uses less digits than its factorization.

6522998660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485303 (or 485301 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 6522998660 is about 80765.0831733615. The cubic root of 6522998660 is about 1868.4540837691.

The spelling of 6522998660 in words is "six billion, five hundred twenty-two million, nine hundred ninety-eight thousand, six hundred sixty".