2564026823 has 4 divisors (see below), whose sum is σ = 2564282568. Its totient is φ = 2563771080.

The previous prime is 2564026807. The next prime is 2564026837. The reversal of 2564026823 is 3286204652.

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 2564026823 - 2⁴ = 2564026807 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 (2564026723) 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, 112193 + ... + 133098.

It is an arithmetic number, because the mean of its divisors is an integer number (641070642).

Almost surely, 2^2564026823 is an apocalyptic number.

2564026823 is a deficient number, since it is larger than the sum of its proper divisors (255745).

2564026823 is a wasteful number, since it uses less digits than its factorization.

2564026823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255744.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 2564026823 is about 50636.2204651966. The cubic root of 2564026823 is about 1368.6976493450.

The spelling of 2564026823 in words is "two billion, five hundred sixty-four million, twenty-six thousand, eight hundred twenty-three".