866263165 has 8 divisors (see below), whose sum is σ = 1063690848. Its totient is φ = 676893840.

The previous prime is 866263141. The next prime is 866263171. The reversal of 866263165 is 561362668.

866263165 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866263165 - 2⁷ = 866263037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

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, 2014351 + ... + 2014780.

It is an arithmetic number, because the mean of its divisors is an integer number (132961356).

Almost surely, 2^866263165 is an apocalyptic number.

It is an amenable number.

866263165 is a deficient number, since it is larger than the sum of its proper divisors (197427683).

866263165 is a wasteful number, since it uses less digits than its factorization.

866263165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029179.

The product of its digits is 311040, while the sum is 43.

The square root of 866263165 is about 29432.3489548490. The cubic root of 866263165 is about 953.2715150416.

The spelling of 866263165 in words is "eight hundred sixty-six million, two hundred sixty-three thousand, one hundred sixty-five".