1138685 has 8 divisors (see below), whose sum is σ = 1413720. Its totient is φ = 879424.

The previous prime is 1138681. The next prime is 1138703. The reversal of 1138685 is 5868311.

It can be written as a sum of positive squares in 4 ways, for example, as 196 + 1138489 = 14^2 + 1067^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1138685 - 2² = 1138681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3782 + ... + 4071.

It is an arithmetic number, because the mean of its divisors is an integer number (176715).

2^1138685 is an apocalyptic number.

It is an amenable number.

1138685 is a deficient number, since it is larger than the sum of its proper divisors (275035).

1138685 is an equidigital number, since it uses as much as digits as its factorization.

1138685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7887.

The product of its digits is 5760, while the sum is 32.

The square root of 1138685 is about 1067.0918423454. The cubic root of 1138685 is about 104.4242103636.

The spelling of 1138685 in words is "one million, one hundred thirty-eight thousand, six hundred eighty-five".