264615289 has 3 divisors (see below), whose sum is σ = 264631557. Its totient is φ = 264599022.

The previous prime is 264615277. The next prime is 264615293. The reversal of 264615289 is 982516462.

The square root of 264615289 is 16267.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 264615289 - 2⁵ = 264615257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264615259) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8134 + ... + 24400.

It is an arithmetic number, because the mean of its divisors is an integer number (88210519).

Almost surely, 2^264615289 is an apocalyptic number.

264615289 is the 16267-th square number.

264615289 is the 8134-th centered octagonal number.

It is an amenable number.

264615289 is a deficient number, since it is larger than the sum of its proper divisors (16268).

264615289 is an frugal number, since it uses more digits than its factorization.

264615289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32534 (or 16267 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The cubic root of 264615289 is about 642.0048532094.

The spelling of 264615289 in words is "two hundred sixty-four million, six hundred fifteen thousand, two hundred eighty-nine".