2565967 has 4 divisors (see below), whose sum is σ = 2590056. Its totient is φ = 2541880.

The previous prime is 2565947. The next prime is 2565989. The reversal of 2565967 is 7695652.

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

It is a cyclic number.

It is not a de Polignac number, because 2565967 - 2¹⁵ = 2533199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11884 + ... + 12097.

It is an arithmetic number, because the mean of its divisors is an integer number (647514).

2^2565967 is an apocalyptic number.

2565967 is a deficient number, since it is larger than the sum of its proper divisors (24089).

2565967 is a wasteful number, since it uses less digits than its factorization.

2565967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088.

The product of its digits is 113400, while the sum is 40.

The square root of 2565967 is about 1601.8636021834. The cubic root of 2565967 is about 136.9042789543.

The spelling of 2565967 in words is "two million, five hundred sixty-five thousand, nine hundred sixty-seven".