2615623 has 2 divisors, whose sum is σ = 2615624. Its totient is φ = 2615622.

The previous prime is 2615617. The next prime is 2615651. The reversal of 2615623 is 3265162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2615623 - 2⁹ = 2615111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2615653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307811 + 1307812.

It is an arithmetic number, because the mean of its divisors is an integer number (1307812).

2^2615623 is an apocalyptic number.

2615623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615623 is an equidigital number, since it uses as much as digits as its factorization.

2615623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 2615623 is about 1617.2887806449. The cubic root of 2615623 is about 137.7817561334.

The spelling of 2615623 in words is "two million, six hundred fifteen thousand, six hundred twenty-three".