866868667 has 8 divisors (see below), whose sum is σ = 1024869600. Its totient is φ = 717408384.

The previous prime is 866868661. The next prime is 866868679. The reversal of 866868667 is 766868668.

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

It is a de Polignac number, because none of the positive numbers 2^k-866868667 is a prime.

It is a super-2 number, since 2×866868667² = 1502922571652713778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866868661) 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, 2134942 + ... + 2135347.

It is an arithmetic number, because the mean of its divisors is an integer number (128108700).

Almost surely, 2^866868667 is an apocalyptic number.

866868667 is a deficient number, since it is larger than the sum of its proper divisors (158000933).

866868667 is a wasteful number, since it uses less digits than its factorization.

866868667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270325.

The product of its digits is 27869184, while the sum is 61.

The square root of 866868667 is about 29442.6334929469. The cubic root of 866868667 is about 953.4935697237.

Subtracting from 866868667 its reverse (766868668), we obtain a palindrome (99999999).

The spelling of 866868667 in words is "eight hundred sixty-six million, eight hundred sixty-eight thousand, six hundred sixty-seven".