864494 has 8 divisors (see below), whose sum is σ = 1300728. Its totient is φ = 430920.

The previous prime is 864491. The next prime is 864503. The reversal of 864494 is 494468.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864491) 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 in 3 ways as a sum of consecutive naturals, for example, 764 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (162591).

2⁸⁶⁴⁴⁹⁴ is an apocalyptic number.

864494 is a deficient number, since it is larger than the sum of its proper divisors (436234).

864494 is a wasteful number, since it uses less digits than its factorization.

864494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its digits is 27648, while the sum is 35.

The square root of 864494 is about 929.7816948080. The cubic root of 864494 is about 95.2622118846.

The spelling of 864494 in words is "eight hundred sixty-four thousand, four hundred ninety-four".