864974 has 8 divisors (see below), whose sum is σ = 1415448. Its totient is φ = 393160.

The previous prime is 864967. The next prime is 864979. The reversal of 864974 is 479468.

It is a happy number.

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

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 864974.

It is not an unprimeable number, because it can be changed into a prime (864979) by changing a digit.

864974 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 19637 + ... + 19680.

It is an arithmetic number, because the mean of its divisors is an integer number (176931).

2⁸⁶⁴⁹⁷⁴ is an apocalyptic number.

864974 is a deficient number, since it is larger than the sum of its proper divisors (550474).

864974 is a wasteful number, since it uses less digits than its factorization.

864974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39330.

The product of its digits is 48384, while the sum is 38.

The square root of 864974 is about 930.0397840953. The cubic root of 864974 is about 95.2798396921.

The spelling of 864974 in words is "eight hundred sixty-four thousand, nine hundred seventy-four".