864463 has 4 divisors (see below), whose sum is σ = 868320. Its totient is φ = 860608.

The previous prime is 864449. The next prime is 864491. The reversal of 864463 is 364468.

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

It is a cyclic number.

It is not a de Polignac number, because 864463 - 2¹⁷ = 733391 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867463) 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, 1570 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (217080).

2⁸⁶⁴⁴⁶³ is an apocalyptic number.

864463 is a deficient number, since it is larger than the sum of its proper divisors (3857).

864463 is a wasteful number, since it uses less digits than its factorization.

864463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856.

The product of its digits is 13824, while the sum is 31.

The square root of 864463 is about 929.7650240787. The cubic root of 864463 is about 95.2610731978.

The spelling of 864463 in words is "eight hundred sixty-four thousand, four hundred sixty-three".