2107663640 has 16 divisors (see below), whose sum is σ = 4742243280. Its totient is φ = 843065440.

The previous prime is 2107663609. The next prime is 2107663661. The reversal of 2107663640 is 463667012.

It is a self number, because there is not a number n which added to its sum of digits gives 2107663640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26345756 + ... + 26345835.

It is an arithmetic number, because the mean of its divisors is an integer number (296390205).

Almost surely, 2^2107663640 is an apocalyptic number.

2107663640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2107663640 is an abundant number, since it is smaller than the sum of its proper divisors (2634579640).

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

2107663640 is a wasteful number, since it uses less digits than its factorization.

2107663640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52691602 (or 52691598 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 2107663640 is about 45909.2979689300. The cubic root of 2107663640 is about 1282.1350354213.

The spelling of 2107663640 in words is "two billion, one hundred seven million, six hundred sixty-three thousand, six hundred forty".