2640609650 has 48 divisors (see below), whose sum is σ = 5668833600. Its totient is φ = 896376000.

The previous prime is 2640609623. The next prime is 2640609689. The reversal of 2640609650 is 569060462.

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, 2000 + ... + 72699.

It is an arithmetic number, because the mean of its divisors is an integer number (118100700).

Almost surely, 2^2640609650 is an apocalyptic number.

2640609650 is an abundant number, since it is smaller than the sum of its proper divisors (3028223950).

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

2640609650 is a wasteful number, since it uses less digits than its factorization.

2640609650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74819 (or 74814 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 2640609650 is about 51386.8626207127. The cubic root of 2640609650 is about 1382.1910251757.

The spelling of 2640609650 in words is "two billion, six hundred forty million, six hundred nine thousand, six hundred fifty".