806437 has 4 divisors (see below), whose sum is σ = 808236. Its totient is φ = 804640.

The previous prime is 806389. The next prime is 806447. The reversal of 806437 is 734608.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 164836 = 801^2 + 406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806437 is a prime.

It is a Duffinian number.

806437 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806447) 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, 387 + ... + 1327.

It is an arithmetic number, because the mean of its divisors is an integer number (202059).

2⁸⁰⁶⁴³⁷ is an apocalyptic number.

It is an amenable number.

806437 is a deficient number, since it is larger than the sum of its proper divisors (1799).

806437 is an equidigital number, since it uses as much as digits as its factorization.

806437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 806437 is about 898.0183739768. The cubic root of 806437 is about 93.0800944105.

The spelling of 806437 in words is "eight hundred six thousand, four hundred thirty-seven".