2564623246 has 16 divisors (see below), whose sum is σ = 3877941600. Its totient is φ = 1272015360.

The previous prime is 2564623241. The next prime is 2564623261. The reversal of 2564623246 is 6423264652.

2564623246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2564623199 and 2564623208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564623241) 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, 124566 + ... + 143686.

It is an arithmetic number, because the mean of its divisors is an integer number (242371350).

Almost surely, 2^2564623246 is an apocalyptic number.

2564623246 is a deficient number, since it is larger than the sum of its proper divisors (1313318354).

2564623246 is a wasteful number, since it uses less digits than its factorization.

2564623246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19659.

The product of its digits is 414720, while the sum is 40.

The square root of 2564623246 is about 50642.1094149918. The cubic root of 2564623246 is about 1368.8037662108.

Adding to 2564623246 its reverse (6423264652), we get a palindrome (8987887898).

The spelling of 2564623246 in words is "two billion, five hundred sixty-four million, six hundred twenty-three thousand, two hundred forty-six".