866379 has 8 divisors (see below), whose sum is σ = 1166400. Its totient is φ = 571976.

The previous prime is 866353. The next prime is 866389. The reversal of 866379 is 973668.

866379 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 866379 - 2⁸ = 866123 is a prime.

It is a super-2 number, since 2×866379² = 1501225143282, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (866309) 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, 1029 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2⁸⁶⁶³⁷⁹ is an apocalyptic number.

866379 is a deficient number, since it is larger than the sum of its proper divisors (300021).

866379 is a wasteful number, since it uses less digits than its factorization.

866379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809.

The product of its digits is 54432, while the sum is 39.

The square root of 866379 is about 930.7948216444. The cubic root of 866379 is about 95.3314003009.

The spelling of 866379 in words is "eight hundred sixty-six thousand, three hundred seventy-nine".