264644066 has 8 divisors (see below), whose sum is σ = 420317100. Its totient is φ = 124538368.

The previous prime is 264644057. The next prime is 264644069. The reversal of 264644066 is 660446462.

It can be written as a sum of positive squares in 2 ways, for example, as 262602025 + 2042041 = 16205^2 + 1429^2 .

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

It is not an unprimeable number, because it can be changed into a prime (264644069) 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, 3891791 + ... + 3891858.

Almost surely, 2^264644066 is an apocalyptic number.

264644066 is a deficient number, since it is larger than the sum of its proper divisors (155673034).

264644066 is a wasteful number, since it uses less digits than its factorization.

264644066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783668.

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 264644066 is about 16267.8844967623. The cubic root of 264644066 is about 642.0281251124.

The spelling of 264644066 in words is "two hundred sixty-four million, six hundred forty-four thousand, sixty-six".