838365685 has 4 divisors (see below), whose sum is σ = 1006038828. Its totient is φ = 670692544.

The previous prime is 838365677. The next prime is 838365739. The reversal of 838365685 is 586563838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 597215844 + 241149841 = 24438^2 + 15529^2 .

It is a cyclic number.

It is not a de Polignac number, because 838365685 - 2³ = 838365677 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 3 ways as a sum of consecutive naturals, for example, 83836564 + ... + 83836573.

It is an arithmetic number, because the mean of its divisors is an integer number (251509707).

Almost surely, 2^838365685 is an apocalyptic number.

It is an amenable number.

838365685 is a deficient number, since it is larger than the sum of its proper divisors (167673143).

838365685 is a wasteful number, since it uses less digits than its factorization.

838365685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167673142.

The product of its digits is 4147200, while the sum is 52.

The square root of 838365685 is about 28954.5451527044. The cubic root of 838365685 is about 942.9264783011.

The spelling of 838365685 in words is "eight hundred thirty-eight million, three hundred sixty-five thousand, six hundred eighty-five".