2564463 has 8 divisors (see below), whose sum is σ = 3730176. Its totient is φ = 1554200.

The previous prime is 2564459. The next prime is 2564489. The reversal of 2564463 is 3644652.

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

It is a cyclic number.

It is not a de Polignac number, because 2564463 - 2² = 2564459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2564463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564423) 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, 38823 + ... + 38888.

It is an arithmetic number, because the mean of its divisors is an integer number (466272).

2^2564463 is an apocalyptic number.

2564463 is a deficient number, since it is larger than the sum of its proper divisors (1165713).

2564463 is a wasteful number, since it uses less digits than its factorization.

2564463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77725.

The product of its digits is 17280, while the sum is 30.

The square root of 2564463 is about 1601.3940801689. The cubic root of 2564463 is about 136.8775256514.

It can be divided in two parts, 2 and 564463, that added together give a palindrome (564465).

The spelling of 2564463 in words is "two million, five hundred sixty-four thousand, four hundred sixty-three".