864937 has 4 divisors (see below), whose sum is σ = 910480. Its totient is φ = 819396.

The previous prime is 864917. The next prime is 864947. The reversal of 864937 is 739468.

864937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864937 - 2¹⁹ = 340649 is a prime.

864937 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 864896 and 864905.

It is not an unprimeable number, because it can be changed into a prime (864917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22743 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (227620).

2⁸⁶⁴⁹³⁷ is an apocalyptic number.

It is an amenable number.

864937 is a deficient number, since it is larger than the sum of its proper divisors (45543).

864937 is a wasteful number, since it uses less digits than its factorization.

864937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45542.

The product of its digits is 36288, while the sum is 37.

The square root of 864937 is about 930.0198922604. The cubic root of 864937 is about 95.2784811139.

Subtracting from 864937 its sum of digits (37), we obtain a square (864900 = 930²).

The spelling of 864937 in words is "eight hundred sixty-four thousand, nine hundred thirty-seven".