2491568 has 10 divisors (see below), whose sum is σ = 4827444. Its totient is φ = 1245776.

The previous prime is 2491553. The next prime is 2491589. The reversal of 2491568 is 8651942.

It is a super-2 number, since 2×2491568² = 12415822197248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77846 + ... + 77877.

2^2491568 is an apocalyptic number.

It is an amenable number.

2491568 is a deficient number, since it is larger than the sum of its proper divisors (2335876).

2491568 is a wasteful number, since it uses less digits than its factorization.

2491568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155731 (or 155725 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 2491568 is about 1578.4701454256. The cubic root of 2491568 is about 135.5681224974.

The spelling of 2491568 in words is "two million, four hundred ninety-one thousand, five hundred sixty-eight".