2490657 has 8 divisors (see below), whose sum is σ = 3576384. Its totient is φ = 1532688.

The previous prime is 2490637. The next prime is 2490659. The reversal of 2490657 is 7560942.

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

It is not a de Polignac number, because 2490657 - 2⁷ = 2490529 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2490657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2490659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31893 + ... + 31970.

It is an arithmetic number, because the mean of its divisors is an integer number (447048).

2^2490657 is an apocalyptic number.

It is an amenable number.

2490657 is a deficient number, since it is larger than the sum of its proper divisors (1085727).

2490657 is a wasteful number, since it uses less digits than its factorization.

2490657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63879.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2490657 is about 1578.1815484918. The cubic root of 2490657 is about 135.5515977474.

The spelling of 2490657 in words is "two million, four hundred ninety thousand, six hundred fifty-seven".