264215636 has 24 divisors (see below), whose sum is σ = 479577000. Its totient is φ = 127217664.

The previous prime is 264215587. The next prime is 264215641. The reversal of 264215636 is 636512462.

It is a happy number.

264215636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 55413136 + 208802500 = 7444^2 + 14450^2 .

It is a junction number, because it is equal to n+sod(n) for n = 264215596 and 264215605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44660 + ... + 50228.

It is an arithmetic number, because the mean of its divisors is an integer number (19982375).

Almost surely, 2^264215636 is an apocalyptic number.

It is an amenable number.

264215636 is a deficient number, since it is larger than the sum of its proper divisors (215361364).

264215636 is a wasteful number, since it uses less digits than its factorization.

264215636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011 (or 6009 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 264215636 is about 16254.7111939893. The cubic root of 264215636 is about 641.6814800501.

The spelling of 264215636 in words is "two hundred sixty-four million, two hundred fifteen thousand, six hundred thirty-six".