2645252764 has 48 divisors (see below), whose sum is σ = 5775517440. Its totient is φ = 1029893760.

The previous prime is 2645252761. The next prime is 2645252809. The reversal of 2645252764 is 4672525462.

It is a self number, because there is not a number n which added to its sum of digits gives 2645252764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645252761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705607 + ... + 709345.

It is an arithmetic number, because the mean of its divisors is an integer number (120323280).

Almost surely, 2^2645252764 is an apocalyptic number.

It is an amenable number.

2645252764 is an abundant number, since it is smaller than the sum of its proper divisors (3130264676).

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

2645252764 is a wasteful number, since it uses less digits than its factorization.

2645252764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6058 (or 6056 counting only the distinct ones).

The product of its digits is 806400, while the sum is 43.

The square root of 2645252764 is about 51432.0208041644. The cubic root of 2645252764 is about 1383.0006756627. Note that the first 3 decimals are identical.

It can be divided in two parts, 264525 and 2764, that added together give a square (267289 = 517²).

The spelling of 2645252764 in words is "two billion, six hundred forty-five million, two hundred fifty-two thousand, seven hundred sixty-four".