2568166 has 4 divisors (see below), whose sum is σ = 3852252. Its totient is φ = 1284082.

The previous prime is 2568131. The next prime is 2568169. The reversal of 2568166 is 6618652.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642040 + ... + 642043.

It is an arithmetic number, because the mean of its divisors is an integer number (963063).

2^2568166 is an apocalyptic number.

2568166 is a deficient number, since it is larger than the sum of its proper divisors (1284086).

2568166 is a wasteful number, since it uses less digits than its factorization.

2568166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284085.

The product of its digits is 17280, while the sum is 34.

The square root of 2568166 is about 1602.5498432186. The cubic root of 2568166 is about 136.9433761772.

The spelling of 2568166 in words is "two million, five hundred sixty-eight thousand, one hundred sixty-six".