2565633 has 8 divisors (see below), whose sum is σ = 3909568. Its totient is φ = 1466064.

The previous prime is 2565611. The next prime is 2565643. The reversal of 2565633 is 3365652.

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

It is not a de Polignac number, because 2565633 - 2⁶ = 2565569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2565633.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61066 + ... + 61107.

It is an arithmetic number, because the mean of its divisors is an integer number (488696).

2^2565633 is an apocalyptic number.

It is an amenable number.

2565633 is a deficient number, since it is larger than the sum of its proper divisors (1343935).

2565633 is a wasteful number, since it uses less digits than its factorization.

2565633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122183.

The product of its digits is 16200, while the sum is 30.

The square root of 2565633 is about 1601.7593452201. The cubic root of 2565633 is about 136.8983386320.

It can be divided in two parts, 25656 and 33, that multiplied together give a palindrome (846648).

The spelling of 2565633 in words is "two million, five hundred sixty-five thousand, six hundred thirty-three".