2643653223 has 12 divisors (see below), whose sum is σ = 3819231000. Its totient is φ = 1762148976.

The previous prime is 2643653213. The next prime is 2643653231. The reversal of 2643653223 is 3223563462.

2643653223 is a `hidden beast` number, since 2 + 643 + 6 + 5 + 3 + 2 + 2 + 3 = 666.

It is not a de Polignac number, because 2643653223 - 2¹⁰ = 2643652199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643653203) 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, 45028 + ... + 85526.

It is an arithmetic number, because the mean of its divisors is an integer number (318269250).

Almost surely, 2^2643653223 is an apocalyptic number.

2643653223 is a deficient number, since it is larger than the sum of its proper divisors (1175577777).

2643653223 is a wasteful number, since it uses less digits than its factorization.

2643653223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47758 (or 47755 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

The square root of 2643653223 is about 51416.4684026431. The cubic root of 2643653223 is about 1382.7218601748.

It can be divided in two parts, 2643653 and 223, that added together give a square (2643876 = 1626²).

The spelling of 2643653223 in words is "two billion, six hundred forty-three million, six hundred fifty-three thousand, two hundred twenty-three".