866774 has 8 divisors (see below), whose sum is σ = 1327968. Its totient is φ = 424120.

The previous prime is 866759. The next prime is 866777. The reversal of 866774 is 477668.

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

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 866774.

It is not an unprimeable number, because it can be changed into a prime (866777) by changing a digit.

866774 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4517 + ... + 4704.

It is an arithmetic number, because the mean of its divisors is an integer number (165996).

2⁸⁶⁶⁷⁷⁴ is an apocalyptic number.

866774 is a deficient number, since it is larger than the sum of its proper divisors (461194).

866774 is a wasteful number, since it uses less digits than its factorization.

866774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9270.

The product of its digits is 56448, while the sum is 38.

The square root of 866774 is about 931.0069817139. The cubic root of 866774 is about 95.3458859482.

The spelling of 866774 in words is "eight hundred sixty-six thousand, seven hundred seventy-four".