2615839 has 2 divisors, whose sum is σ = 2615840. Its totient is φ = 2615838.

The previous prime is 2615831. The next prime is 2615857. The reversal of 2615839 is 9385162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2615839 - 2³ = 2615831 is a prime.

It is a super-2 number, since 2×2615839² = 13685227347842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2615831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307919 + 1307920.

It is an arithmetic number, because the mean of its divisors is an integer number (1307920).

2^2615839 is an apocalyptic number.

2615839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615839 is an equidigital number, since it uses as much as digits as its factorization.

2615839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 2615839 is about 1617.3555576929. The cubic root of 2615839 is about 137.7855487340.

The spelling of 2615839 in words is "two million, six hundred fifteen thousand, eight hundred thirty-nine".