4643591 has 2 divisors, whose sum is σ = 4643592. Its totient is φ = 4643590.

The previous prime is 4643579. The next prime is 4643593. The reversal of 4643591 is 1953464.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4643591 - 2²² = 449287 is a prime.

Together with 4643593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4643593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321795 + 2321796.

It is an arithmetic number, because the mean of its divisors is an integer number (2321796).

Almost surely, 2^4643591 is an apocalyptic number.

4643591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4643591 is an equidigital number, since it uses as much as digits as its factorization.

4643591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 4643591 is about 2154.8993015916. The cubic root of 4643591 is about 166.8340349819.

The spelling of 4643591 in words is "four million, six hundred forty-three thousand, five hundred ninety-one".