2516649 has 8 divisors (see below), whose sum is σ = 3471360. Its totient is φ = 1619856.

The previous prime is 2516603. The next prime is 2516659. The reversal of 2516649 is 9466152.

2516649 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 not a de Polignac number, because 2516649 - 2¹² = 2512553 is a prime.

It is a Curzon number.

2516649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2516659) 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 7 ways as a sum of consecutive naturals, for example, 14377 + ... + 14550.

It is an arithmetic number, because the mean of its divisors is an integer number (433920).

2^2516649 is an apocalyptic number.

2516649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2516649 is a deficient number, since it is larger than the sum of its proper divisors (954711).

2516649 is a wasteful number, since it uses less digits than its factorization.

2516649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28959.

The product of its digits is 12960, while the sum is 33.

The square root of 2516649 is about 1586.3949697348. The cubic root of 2516649 is about 136.0214967461.

The spelling of 2516649 in words is "two million, five hundred sixteen thousand, six hundred forty-nine".