2640704976 has 200 divisors, whose sum is σ = 9407147904. Its totient is φ = 696418560.

The previous prime is 2640704951. The next prime is 2640705007. The reversal of 2640704976 is 6794070462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 106741 + ... + 129131.

Almost surely, 2^2640704976 is an apocalyptic number.

2640704976 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640704976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4703573952).

2640704976 is an abundant number, since it is smaller than the sum of its proper divisors (6766442928).

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

2640704976 is a wasteful number, since it uses less digits than its factorization.

2640704976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22431 (or 22416 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 2640704976 is about 51387.7901451308. The cubic root of 2640704976 is about 1382.2076573394.

The spelling of 2640704976 in words is "two billion, six hundred forty million, seven hundred four thousand, nine hundred seventy-six".