2572666 has 16 divisors (see below), whose sum is σ = 3985344. Its totient is φ = 1245024.

The previous prime is 2572663. The next prime is 2572667. The reversal of 2572666 is 6662752.

It is a happy number.

2572666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2572666² = 13237220695112, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2572663) 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, 9651 + ... + 9913.

It is an arithmetic number, because the mean of its divisors is an integer number (249084).

2^2572666 is an apocalyptic number.

2572666 is a deficient number, since it is larger than the sum of its proper divisors (1412678).

2572666 is a wasteful number, since it uses less digits than its factorization.

2572666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its digits is 30240, while the sum is 34.

The square root of 2572666 is about 1603.9532412137. The cubic root of 2572666 is about 137.0233146248.

The spelling of 2572666 in words is "two million, five hundred seventy-two thousand, six hundred sixty-six".