2499635 has 4 divisors (see below), whose sum is σ = 2999568. Its totient is φ = 1999704.

The previous prime is 2499631. The next prime is 2499641. The reversal of 2499635 is 5369942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5369942 = 2 ⋅2684971.

It is a cyclic number.

It is not a de Polignac number, because 2499635 - 2² = 2499631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2499631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249959 + ... + 249968.

It is an arithmetic number, because the mean of its divisors is an integer number (749892).

2^2499635 is an apocalyptic number.

2499635 is a deficient number, since it is larger than the sum of its proper divisors (499933).

2499635 is an equidigital number, since it uses as much as digits as its factorization.

2499635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499932.

The product of its digits is 58320, while the sum is 38.

The square root of 2499635 is about 1581.0234027363. The cubic root of 2499635 is about 135.7142754254.

The spelling of 2499635 in words is "two million, four hundred ninety-nine thousand, six hundred thirty-five".