2643633617 has 2 divisors, whose sum is σ = 2643633618. Its totient is φ = 2643633616.

The previous prime is 2643633613. The next prime is 2643633623. The reversal of 2643633617 is 7163363462.

2643633617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2643605056 + 28561 = 51416^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643633617 - 2² = 2643633613 is a prime.

It is not a weakly prime, because it can be changed into another prime (2643633613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321816808 + 1321816809.

It is an arithmetic number, because the mean of its divisors is an integer number (1321816809).

Almost surely, 2^2643633617 is an apocalyptic number.

It is an amenable number.

2643633617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643633617 is an equidigital number, since it uses as much as digits as its factorization.

2643633617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 41.

The square root of 2643633617 is about 51416.2777435318. The cubic root of 2643633617 is about 1382.7184419615.

The spelling of 2643633617 in words is "two billion, six hundred forty-three million, six hundred thirty-three thousand, six hundred seventeen".