264661205 has 8 divisors (see below), whose sum is σ = 318957912. Its totient is φ = 210819328.

The previous prime is 264661193. The next prime is 264661211. The reversal of 264661205 is 502166462.

It can be written as a sum of positive squares in 4 ways, for example, as 26946481 + 237714724 = 5191^2 + 15418^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 264661205 - 2¹⁰ = 264660181 is a prime.

It is a Duffinian number.

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, 112424 + ... + 114753.

It is an arithmetic number, because the mean of its divisors is an integer number (39869739).

Almost surely, 2^264661205 is an apocalyptic number.

It is an amenable number.

264661205 is a deficient number, since it is larger than the sum of its proper divisors (54296707).

264661205 is a wasteful number, since it uses less digits than its factorization.

264661205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227415.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 264661205 is about 16268.4112623206. The cubic root of 264661205 is about 642.0419845862.

The spelling of 264661205 in words is "two hundred sixty-four million, six hundred sixty-one thousand, two hundred five".