2600610640 has 20 divisors (see below), whose sum is σ = 6046419924. Its totient is φ = 1040244224.

The previous prime is 2600610521. The next prime is 2600610703. The reversal of 2600610640 is 460160062.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 607523904 + 1993086736 = 24648^2 + 44644^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 16253737 + ... + 16253896.

Almost surely, 2^2600610640 is an apocalyptic number.

2600610640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2600610640 is an abundant number, since it is smaller than the sum of its proper divisors (3445809284).

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

2600610640 is a wasteful number, since it uses less digits than its factorization.

2600610640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32507646 (or 32507640 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2600610640 is about 50996.1826022301. The cubic root of 2600610640 is about 1375.1765089108.

The spelling of 2600610640 in words is "two billion, six hundred million, six hundred ten thousand, six hundred forty".