5617639 has 2 divisors, whose sum is σ = 5617640. Its totient is φ = 5617638.

The previous prime is 5617637. The next prime is 5617643. The reversal of 5617639 is 9367165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5617639 - 2¹ = 5617637 is a prime.

Together with 5617637, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 5⁵ + 6³ + 1 + 7⁷ + 6⁵ + 3¹⁴ + 9 .

5617639 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5617598 and 5617607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5617637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2808819 + 2808820.

It is an arithmetic number, because the mean of its divisors is an integer number (2808820).

Almost surely, 2^5617639 is an apocalyptic number.

5617639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5617639 is an equidigital number, since it uses as much as digits as its factorization.

5617639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 37.

The square root of 5617639 is about 2370.1559020453. The cubic root of 5617639 is about 177.7670541998.

The spelling of 5617639 in words is "five million, six hundred seventeen thousand, six hundred thirty-nine".