866468647 has 8 divisors (see below), whose sum is σ = 994988160. Its totient is φ = 746240760.

The previous prime is 866468639. The next prime is 866468671. The reversal of 866468647 is 746864668.

866468647 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 866468647 - 2³ = 866468639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866468677) 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, 2072683 + ... + 2073100.

It is an arithmetic number, because the mean of its divisors is an integer number (124373520).

Almost surely, 2^866468647 is an apocalyptic number.

866468647 is a deficient number, since it is larger than the sum of its proper divisors (128519513).

866468647 is a wasteful number, since it uses less digits than its factorization.

866468647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145813.

The product of its digits is 9289728, while the sum is 55.

The square root of 866468647 is about 29435.8394988150. The cubic root of 866468647 is about 953.3468826895.

The spelling of 866468647 in words is "eight hundred sixty-six million, four hundred sixty-eight thousand, six hundred forty-seven".