2645312646 has 32 divisors (see below), whose sum is σ = 5522688000. Its totient is φ = 843733440.

The previous prime is 2645312623. The next prime is 2645312687. The reversal of 2645312646 is 6462135462.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63346 + ... + 96453.

It is an arithmetic number, because the mean of its divisors is an integer number (172584000).

Almost surely, 2^2645312646 is an apocalyptic number.

2645312646 is an abundant number, since it is smaller than the sum of its proper divisors (2877375354).

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

2645312646 is a wasteful number, since it uses less digits than its factorization.

2645312646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159924.

The product of its digits is 207360, while the sum is 39.

The square root of 2645312646 is about 51432.6029479357. The cubic root of 2645312646 is about 1383.0111114924.

The spelling of 2645312646 in words is "two billion, six hundred forty-five million, three hundred twelve thousand, six hundred forty-six".