2566945 has 8 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 2037360.

The previous prime is 2566939. The next prime is 2566981. The reversal of 2566945 is 5496652.

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

It is not a de Polignac number, because 2566945 - 2⁹ = 2566433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305 + ... + 2614.

It is an arithmetic number, because the mean of its divisors is an integer number (388080).

2^2566945 is an apocalyptic number.

It is an amenable number.

2566945 is a deficient number, since it is larger than the sum of its proper divisors (537695).

2566945 is a wasteful number, since it uses less digits than its factorization.

2566945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055.

The product of its digits is 64800, while the sum is 37.

The square root of 2566945 is about 1602.1688425381. The cubic root of 2566945 is about 136.9216701078.

The spelling of 2566945 in words is "two million, five hundred sixty-six thousand, nine hundred forty-five".