2656567 has 4 divisors (see below), whose sum is σ = 2676096. Its totient is φ = 2637040.

The previous prime is 2656553. The next prime is 2656601. The reversal of 2656567 is 7656562.

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 2656567 - 2¹⁹ = 2132279 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 (2656547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9559 + ... + 9832.

It is an arithmetic number, because the mean of its divisors is an integer number (669024).

2^2656567 is an apocalyptic number.

2656567 is a deficient number, since it is larger than the sum of its proper divisors (19529).

2656567 is a wasteful number, since it uses less digits than its factorization.

2656567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19528.

The product of its digits is 75600, while the sum is 37.

The square root of 2656567 is about 1629.8978495599. The cubic root of 2656567 is about 138.4969654442.

It can be divided in two parts, 2656 and 567, that added together give a palindrome (3223).

The spelling of 2656567 in words is "two million, six hundred fifty-six thousand, five hundred sixty-seven".