814437685 has 8 divisors (see below), whose sum is σ = 977568696. Its totient is φ = 651387840.

The previous prime is 814437619. The next prime is 814437691. The reversal of 814437685 is 586734418.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21846276 + 792591409 = 4674^2 + 28153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 814437685 - 2²³ = 806049077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 40615.

It is an arithmetic number, because the mean of its divisors is an integer number (122196087).

Almost surely, 2^814437685 is an apocalyptic number.

It is an amenable number.

814437685 is a deficient number, since it is larger than the sum of its proper divisors (163131011).

814437685 is a wasteful number, since it uses less digits than its factorization.

814437685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40583.

The product of its digits is 645120, while the sum is 46.

The square root of 814437685 is about 28538.3546302165. The cubic root of 814437685 is about 933.8689880845.

The spelling of 814437685 in words is "eight hundred fourteen million, four hundred thirty-seven thousand, six hundred eighty-five".