2499806 has 8 divisors (see below), whose sum is σ = 3784440. Its totient is φ = 1238328.

The previous prime is 2499803. The next prime is 2499821. The reversal of 2499806 is 6089942.

2499806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2499806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499803) 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 in 3 ways as a sum of consecutive naturals, for example, 5516 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (473055).

2^2499806 is an apocalyptic number.

2499806 is a deficient number, since it is larger than the sum of its proper divisors (1284634).

2499806 is a wasteful number, since it uses less digits than its factorization.

2499806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11578.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2499806 is about 1581.0774807074. The cubic root of 2499806 is about 135.7173700921.

The spelling of 2499806 in words is "two million, four hundred ninety-nine thousand, eight hundred six".