865047264 has 48 divisors (see below), whose sum is σ = 2349058320. Its totient is φ = 278405120.

The previous prime is 865047263. The next prime is 865047269. The reversal of 865047264 is 462740568.

865047264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865047263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152577 + ... + 158144.

It is an arithmetic number, because the mean of its divisors is an integer number (48938715).

Almost surely, 2^865047264 is an apocalyptic number.

It is an amenable number.

865047264 is an abundant number, since it is smaller than the sum of its proper divisors (1484011056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865047264 is a wasteful number, since it uses less digits than its factorization.

865047264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310763 (or 310755 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 865047264 is about 29411.6858408354. The cubic root of 865047264 is about 952.8252970941.

The spelling of 865047264 in words is "eight hundred sixty-five million, forty-seven thousand, two hundred sixty-four".