2556366 has 8 divisors (see below), whose sum is σ = 5112744. Its totient is φ = 852120.

The previous prime is 2556331. The next prime is 2556373. The reversal of 2556366 is 6636552.

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

2556366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213025 + ... + 213036.

It is an arithmetic number, because the mean of its divisors is an integer number (639093).

2^2556366 is an apocalyptic number.

2556366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2556366 is a wasteful number, since it uses less digits than its factorization.

2556366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426066.

The product of its digits is 32400, while the sum is 33.

The square root of 2556366 is about 1598.8639716999. The cubic root of 2556366 is about 136.7333153669.

The spelling of 2556366 in words is "two million, five hundred fifty-six thousand, three hundred sixty-six".