6620553260 has 48 divisors (see below), whose sum is σ = 14618439360. Its totient is φ = 2514973440.

The previous prime is 6620553241. The next prime is 6620553263. The reversal of 6620553260 is 623550266.

It is a self number, because there is not a number n which added to its sum of digits gives 6620553260.

It is not an unprimeable number, because it can be changed into a prime (6620553263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58184 + ... + 128943.

It is an arithmetic number, because the mean of its divisors is an integer number (304550820).

Almost surely, 2^6620553260 is an apocalyptic number.

It is an amenable number.

6620553260 is an abundant number, since it is smaller than the sum of its proper divisors (7997886100).

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

6620553260 is a wasteful number, since it uses less digits than its factorization.

6620553260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187226 (or 187224 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 6620553260 is about 81366.7822885974. The cubic root of 6620553260 is about 1877.7225761140.

The spelling of 6620553260 in words is "six billion, six hundred twenty million, five hundred fifty-three thousand, two hundred sixty".