2490621 has 12 divisors (see below), whose sum is σ = 3863232. Its totient is φ = 1423128.

The previous prime is 2490617. The next prime is 2490623. The reversal of 2490621 is 1260942.

It is not a de Polignac number, because 2490621 - 2² = 2490617 is a prime.

2490621 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2490591 and 2490600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8325 + ... + 8618.

It is an arithmetic number, because the mean of its divisors is an integer number (321936).

2^2490621 is an apocalyptic number.

2490621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2490621 is a deficient number, since it is larger than the sum of its proper divisors (1372611).

2490621 is a wasteful number, since it uses less digits than its factorization.

2490621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960 (or 16953 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2490621 is about 1578.1701429187. The cubic root of 2490621 is about 135.5509446559.

The spelling of 2490621 in words is "two million, four hundred ninety thousand, six hundred twenty-one".