2645620323 has 12 divisors (see below), whose sum is σ = 3653329368. Its totient is φ = 1702926400.

The previous prime is 2645620303. The next prime is 2645620331. The reversal of 2645620323 is 3230265462.

It is not a de Polignac number, because 2645620323 - 2²⁰ = 2644571747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2645620303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 521778 + ... + 526823.

It is an arithmetic number, because the mean of its divisors is an integer number (304444114).

Almost surely, 2^2645620323 is an apocalyptic number.

2645620323 is a deficient number, since it is larger than the sum of its proper divisors (1007709045).

2645620323 is a wasteful number, since it uses less digits than its factorization.

2645620323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048662 (or 1048633 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 2645620323 is about 51435.5939306625. The cubic root of 2645620323 is about 1383.0647288741.

Adding to 2645620323 its reverse (3230265462), we get a palindrome (5875885785).

The spelling of 2645620323 in words is "two billion, six hundred forty-five million, six hundred twenty thousand, three hundred twenty-three".