866964 has 24 divisors (see below), whose sum is σ = 2312128. Its totient is φ = 247680.

The previous prime is 866963. The next prime is 866969. The reversal of 866964 is 469668.

866964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam 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 7 ways as a sum of consecutive naturals, for example, 5077 + ... + 5244.

2⁸⁶⁶⁹⁶⁴ is an apocalyptic number.

866964 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

866964 is an abundant number, since it is smaller than the sum of its proper divisors (1445164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866964 is a wasteful number, since it uses less digits than its factorization.

866964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335 (or 10333 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 866964 is about 931.1090161737. The cubic root of 866964 is about 95.3528521604.

It can be divided in two parts, 866 and 964, that added together give a triangular number (1830 = T₆₀).

The spelling of 866964 in words is "eight hundred sixty-six thousand, nine hundred sixty-four".