2566690 has 32 divisors (see below), whose sum is σ = 5428224. Its totient is φ = 855360.

The previous prime is 2566687. The next prime is 2566699. The reversal of 2566690 is 966652.

It is a super-2 number, since 2×2566690² = 13175795112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2566699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2095 + ... + 3085.

It is an arithmetic number, because the mean of its divisors is an integer number (169632).

2^2566690 is an apocalyptic number.

2566690 is an abundant number, since it is smaller than the sum of its proper divisors (2861534).

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

2566690 is a wasteful number, since it uses less digits than its factorization.

2566690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2566690 is about 1602.0892609340. The cubic root of 2566690 is about 136.9171360304.

The spelling of 2566690 in words is "two million, five hundred sixty-six thousand, six hundred ninety".