865647047223 has 20 divisors (see below), whose sum is σ = 1477859510160. Its totient is φ = 494655455232.

The previous prime is 865647047189. The next prime is 865647047273. The reversal of 865647047223 is 322740746568.

865647047223 is a `hidden beast` number, since 8 + 6 + 564 + 7 + 0 + 4 + 72 + 2 + 3 = 666.

865647047223 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 865647047223 - 2⁶ = 865647047159 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 865647047223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865647047273) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 763356618 + ... + 763357751.

It is an arithmetic number, because the mean of its divisors is an integer number (73892975508).

Almost surely, 2^865647047223 is an apocalyptic number.

865647047223 is a deficient number, since it is larger than the sum of its proper divisors (612212462937).

865647047223 is a wasteful number, since it uses less digits than its factorization.

865647047223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526714388 (or 1526714379 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 865647047223 in words is "eight hundred sixty-five billion, six hundred forty-seven million, forty-seven thousand, two hundred twenty-three".