5615639 has 2 divisors, whose sum is σ = 5615640. Its totient is φ = 5615638.

The previous prime is 5615629. The next prime is 5615641. The reversal of 5615639 is 9365165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5615639 - 2⁸ = 5615383 is a prime.

Together with 5615641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 5615599 and 5615608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5615609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807819 + 2807820.

It is an arithmetic number, because the mean of its divisors is an integer number (2807820).

Almost surely, 2^5615639 is an apocalyptic number.

5615639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615639 is an equidigital number, since it uses as much as digits as its factorization.

5615639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 5615639 is about 2369.7339513118. The cubic root of 5615639 is about 177.7459554008.

The spelling of 5615639 in words is "five million, six hundred fifteen thousand, six hundred thirty-nine".