2650506660 has 72 divisors (see below), whose sum is σ = 8389442880. Its totient is φ = 676070208.

The previous prime is 2650506629. The next prime is 2650506701. The reversal of 2650506660 is 666050562.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315970 + ... + 324249.

It is an arithmetic number, because the mean of its divisors is an integer number (116520040).

Almost surely, 2^2650506660 is an apocalyptic number.

2650506660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2650506660 is an abundant number, since it is smaller than the sum of its proper divisors (5738936220).

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

2650506660 is a wasteful number, since it uses less digits than its factorization.

2650506660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640257 (or 640252 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 2650506660 is about 51483.0715866876. The cubic root of 2650506660 is about 1383.9156904827.

The spelling of 2650506660 in words is "two billion, six hundred fifty million, five hundred six thousand, six hundred sixty".