2645306500 has 24 divisors (see below), whose sum is σ = 5777350488. Its totient is φ = 1058122400.

The previous prime is 2645306473. The next prime is 2645306509. The reversal of 2645306500 is 56035462.

It can be written as a sum of positive squares in 4 ways, for example, as 350513284 + 2294793216 = 18722^2 + 47904^2 .

It is not an unprimeable number, because it can be changed into a prime (2645306509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2644807 + ... + 2645806.

It is an arithmetic number, because the mean of its divisors is an integer number (240722937).

Almost surely, 2^2645306500 is an apocalyptic number.

2645306500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2645306500 is an abundant number, since it is smaller than the sum of its proper divisors (3132043988).

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

2645306500 is a wasteful number, since it uses less digits than its factorization.

2645306500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290632 (or 5290620 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2645306500 is about 51432.5431998069. The cubic root of 2645306500 is about 1383.0100404164.

The spelling of 2645306500 in words is "two billion, six hundred forty-five million, three hundred six thousand, five hundred".