864437 has 4 divisors (see below), whose sum is σ = 987936. Its totient is φ = 740940.

The previous prime is 864427. The next prime is 864439. The reversal of 864437 is 734468.

It is a happy number.

864437 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 864437 - 2¹² = 860341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864439) 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, 61739 + ... + 61752.

It is an arithmetic number, because the mean of its divisors is an integer number (246984).

2⁸⁶⁴⁴³⁷ is an apocalyptic number.

It is an amenable number.

864437 is a deficient number, since it is larger than the sum of its proper divisors (123499).

864437 is a wasteful number, since it uses less digits than its factorization.

864437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123498.

The product of its digits is 16128, while the sum is 32.

The square root of 864437 is about 929.7510419462. The cubic root of 864437 is about 95.2601181491.

The spelling of 864437 in words is "eight hundred sixty-four thousand, four hundred thirty-seven".