2105598660 has 48 divisors (see below), whose sum is σ = 6431648832. Its totient is φ = 510448000.

The previous prime is 2105598653. The next prime is 2105598661. The reversal of 2105598660 is 668955012.

It is not an unprimeable number, because it can be changed into a prime (2105598661) 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, 1594491 + ... + 1595810.

It is an arithmetic number, because the mean of its divisors is an integer number (133992684).

Almost surely, 2^2105598660 is an apocalyptic number.

2105598660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105598660 is an abundant number, since it is smaller than the sum of its proper divisors (4326050172).

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

2105598660 is a wasteful number, since it uses less digits than its factorization.

2105598660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190324 (or 3190322 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 2105598660 is about 45886.8026778942. The cubic root of 2105598660 is about 1281.7161753652.

The spelling of 2105598660 in words is "two billion, one hundred five million, five hundred ninety-eight thousand, six hundred sixty".