864982 has 4 divisors (see below), whose sum is σ = 1297476. Its totient is φ = 432490.

The previous prime is 864979. The next prime is 864989. The reversal of 864982 is 289468.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216244 + ... + 216247.

It is an arithmetic number, because the mean of its divisors is an integer number (324369).

2⁸⁶⁴⁹⁸² is an apocalyptic number.

864982 is a deficient number, since it is larger than the sum of its proper divisors (432494).

864982 is a wasteful number, since it uses less digits than its factorization.

864982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432493.

The product of its digits is 27648, while the sum is 37.

The square root of 864982 is about 930.0440849766. The cubic root of 864982 is about 95.2801334336.

The spelling of 864982 in words is "eight hundred sixty-four thousand, nine hundred eighty-two".