866967 has 4 divisors (see below), whose sum is σ = 1155960. Its totient is φ = 577976.

The previous prime is 866963. The next prime is 866969. The reversal of 866967 is 769668.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866967 - 2² = 866963 is a prime.

It is a D-number.

866967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144492 + ... + 144497.

It is an arithmetic number, because the mean of its divisors is an integer number (288990).

2⁸⁶⁶⁹⁶⁷ is an apocalyptic number.

866967 is a deficient number, since it is larger than the sum of its proper divisors (288993).

866967 is a wasteful number, since it uses less digits than its factorization.

866967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288992.

The product of its digits is 108864, while the sum is 42.

The square root of 866967 is about 931.1106271545. The cubic root of 866967 is about 95.3529621451.

The spelling of 866967 in words is "eight hundred sixty-six thousand, nine hundred sixty-seven".