864738 has 24 divisors (see below), whose sum is σ = 2141568. Its totient is φ = 247032.

The previous prime is 864737. The next prime is 864757. The reversal of 864738 is 837468.

864738 is a `hidden beast` number, since 8 + 647 + 3 + 8 = 666.

864738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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 864738.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3306 + ... + 3557.

It is an arithmetic number, because the mean of its divisors is an integer number (89232).

2⁸⁶⁴⁷³⁸ is an apocalyptic number.

864738 is an abundant number, since it is smaller than the sum of its proper divisors (1276830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864738 is a wasteful number, since it uses less digits than its factorization.

864738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878 (or 6875 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 864738 is about 929.9128991470. The cubic root of 864738 is about 95.2711735019.

It can be divided in two parts, 8 and 64738, that added together give a palindrome (64746).

The spelling of 864738 in words is "eight hundred sixty-four thousand, seven hundred thirty-eight".