2504639 has 2 divisors, whose sum is σ = 2504640. Its totient is φ = 2504638.

The previous prime is 2504629. The next prime is 2504657. The reversal of 2504639 is 9364052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2504639 - 2¹² = 2500543 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 5⁹ + 0 + 4⁶ + 6⁵ + 3¹² + 9 .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2504629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252319 + 1252320.

It is an arithmetic number, because the mean of its divisors is an integer number (1252320).

2^2504639 is an apocalyptic number.

2504639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2504639 is an equidigital number, since it uses as much as digits as its factorization.

2504639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2504639 is about 1582.6051307891. The cubic root of 2504639 is about 135.8047768475.

The spelling of 2504639 in words is "two million, five hundred four thousand, six hundred thirty-nine".