2645607776 has 48 divisors (see below), whose sum is σ = 5979423744. Its totient is φ = 1128726144.

The previous prime is 2645607743. The next prime is 2645607791. The reversal of 2645607776 is 6777065462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23471 + ... + 76433.

It is an arithmetic number, because the mean of its divisors is an integer number (124571328).

Almost surely, 2^2645607776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645607776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2989711872).

2645607776 is an abundant number, since it is smaller than the sum of its proper divisors (3333815968).

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

2645607776 is a wasteful number, since it uses less digits than its factorization.

2645607776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53203 (or 53195 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 50.

The square root of 2645607776 is about 51435.4719624502. The cubic root of 2645607776 is about 1383.0625424504.

The spelling of 2645607776 in words is "two billion, six hundred forty-five million, six hundred seven thousand, seven hundred seventy-six".