5564639 has 2 divisors, whose sum is σ = 5564640. Its totient is φ = 5564638.

The previous prime is 5564633. The next prime is 5564651. The reversal of 5564639 is 9364655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5564639 - 2¹⁶ = 5499103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5564633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782319 + 2782320.

It is an arithmetic number, because the mean of its divisors is an integer number (2782320).

Almost surely, 2^5564639 is an apocalyptic number.

5564639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5564639 is an equidigital number, since it uses as much as digits as its factorization.

5564639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 5564639 is about 2358.9487065216. The cubic root of 5564639 is about 177.2062349716.

The spelling of 5564639 in words is "five million, five hundred sixty-four thousand, six hundred thirty-nine".