2566616 has 64 divisors (see below), whose sum is σ = 5745600. Its totient is φ = 1064448.

The previous prime is 2566601. The next prime is 2566633. The reversal of 2566616 is 6166652.

2566616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (12960) is a multiple of the sum of its prime factors (108).

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, 69350 + ... + 69386.

It is an arithmetic number, because the mean of its divisors is an integer number (89775).

2^2566616 is an apocalyptic number.

2566616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2566616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2872800).

2566616 is an abundant number, since it is smaller than the sum of its proper divisors (3178984).

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

2566616 is a wasteful number, since it uses less digits than its factorization.

2566616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 104 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 2566616 is about 1602.0661659245. The cubic root of 2566616 is about 136.9158202027.

The spelling of 2566616 in words is "two million, five hundred sixty-six thousand, six hundred sixteen".