264855865 has 8 divisors (see below), whose sum is σ = 318493440. Its totient is φ = 211440432.

The previous prime is 264855853. The next prime is 264855883. The reversal of 264855865 is 568558462.

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 264855865 - 2²³ = 256467257 is a prime.

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, 52899 + ... + 57688.

It is an arithmetic number, because the mean of its divisors is an integer number (39811680).

Almost surely, 2^264855865 is an apocalyptic number.

It is an amenable number.

264855865 is a deficient number, since it is larger than the sum of its proper divisors (53637575).

264855865 is a wasteful number, since it uses less digits than its factorization.

264855865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111071.

The product of its digits is 2304000, while the sum is 49.

The square root of 264855865 is about 16274.3929226254. The cubic root of 264855865 is about 642.1993546650.

The spelling of 264855865 in words is "two hundred sixty-four million, eight hundred fifty-five thousand, eight hundred sixty-five".