264144361 has 4 divisors (see below), whose sum is σ = 284463172. Its totient is φ = 243825552.

The previous prime is 264144329. The next prime is 264144367. The reversal of 264144361 is 163441462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63043600 + 201100761 = 7940^2 + 14181^2 .

It is a cyclic number.

It is not a de Polignac number, because 264144361 - 2⁵ = 264144329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264144367) 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, 10159386 + ... + 10159411.

It is an arithmetic number, because the mean of its divisors is an integer number (71115793).

Almost surely, 2^264144361 is an apocalyptic number.

It is an amenable number.

264144361 is a deficient number, since it is larger than the sum of its proper divisors (20318811).

264144361 is a wasteful number, since it uses less digits than its factorization.

264144361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20318810.

The product of its digits is 13824, while the sum is 31.

The square root of 264144361 is about 16252.5186048194. The cubic root of 264144361 is about 641.6237747084.

The spelling of 264144361 in words is "two hundred sixty-four million, one hundred forty-four thousand, three hundred sixty-one".