2645990712 has 80 divisors (see below), whose sum is σ = 7454379240. Its totient is φ = 876861504.

The previous prime is 2645990707. The next prime is 2645990729. The reversal of 2645990712 is 2170995462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 100303 + ... + 123905.

Almost surely, 2^2645990712 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 2645990712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3727189620).

2645990712 is an abundant number, since it is smaller than the sum of its proper divisors (4808388528).

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

2645990712 is a wasteful number, since it uses less digits than its factorization.

2645990712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23794 (or 23781 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 2645990712 is about 51439.1943171741. The cubic root of 2645990712 is about 1383.1292692584.

The spelling of 2645990712 in words is "two billion, six hundred forty-five million, nine hundred ninety thousand, seven hundred twelve".