264213065 has 16 divisors (see below), whose sum is σ = 336234240. Its totient is φ = 198624000.

The previous prime is 264213049. The next prime is 264213091. The reversal of 264213065 is 560312462.

It is not a de Polignac number, because 264213065 - 2⁴ = 264213049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61766 + ... + 65904.

It is an arithmetic number, because the mean of its divisors is an integer number (21014640).

Almost surely, 2^264213065 is an apocalyptic number.

It is an amenable number.

264213065 is a deficient number, since it is larger than the sum of its proper divisors (72021175).

264213065 is a wasteful number, since it uses less digits than its factorization.

264213065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 264213065 is about 16254.6321090328. The cubic root of 264213065 is about 641.6793987092.

The spelling of 264213065 in words is "two hundred sixty-four million, two hundred thirteen thousand, sixty-five".