2199536660 has 24 divisors (see below), whose sum is σ = 4619922216. Its totient is φ = 879644160.

The previous prime is 2199536641. The next prime is 2199536683. The reversal of 2199536660 is 666359912.

It can be written as a sum of positive squares in 4 ways, for example, as 397364356 + 1802172304 = 19934^2 + 42452^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 168944 + ... + 181496.

It is an arithmetic number, because the mean of its divisors is an integer number (192496759).

Almost surely, 2^2199536660 is an apocalyptic number.

2199536660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2199536660 is an abundant number, since it is smaller than the sum of its proper divisors (2420385556).

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

2199536660 is a wasteful number, since it uses less digits than its factorization.

2199536660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21323 (or 21321 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 2199536660 is about 46899.2181171499. The cubic root of 2199536660 is about 1300.5001349800.

The spelling of 2199536660 in words is "two billion, one hundred ninety-nine million, five hundred thirty-six thousand, six hundred sixty".