2516646 has 32 divisors (see below), whose sum is σ = 5816448. Its totient is φ = 717440.

The previous prime is 2516603. The next prime is 2516659. The reversal of 2516646 is 6466152.

2516646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2516646 is a nontrivial binomial coefficient, being equal to C(2244, 2).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (181764).

2^2516646 is an apocalyptic number.

2516646 is the 2243-rd triangular number and also the 1122-nd hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2516646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2908224).

2516646 is an abundant number, since it is smaller than the sum of its proper divisors (3299802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2516646 is a wasteful number, since it uses less digits than its factorization.

2516646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276.

The product of its digits is 8640, while the sum is 30.

The square root of 2516646 is about 1586.3940241945. The cubic root of 2516646 is about 136.0214426975.

The spelling of 2516646 in words is "two million, five hundred sixteen thousand, six hundred forty-six".