864763 has 4 divisors (see below), whose sum is σ = 879480. Its totient is φ = 850048.

The previous prime is 864757. The next prime is 864781. The reversal of 864763 is 367468.

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 864763 - 2⁹ = 864251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7270 + ... + 7387.

It is an arithmetic number, because the mean of its divisors is an integer number (219870).

2⁸⁶⁴⁷⁶³ is an apocalyptic number.

864763 is a deficient number, since it is larger than the sum of its proper divisors (14717).

864763 is a wasteful number, since it uses less digits than its factorization.

864763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14716.

The product of its digits is 24192, while the sum is 34.

The square root of 864763 is about 929.9263411690. The cubic root of 864763 is about 95.2720916052.

The spelling of 864763 in words is "eight hundred sixty-four thousand, seven hundred sixty-three".