37685 has 4 divisors (see below), whose sum is σ = 45228. Its totient is φ = 30144.

The previous prime is 37663. The next prime is 37691. The reversal of 37685 is 58673.

37685 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 an emirpimes, since its reverse is a distinct semiprime: 58673 = 23 ⋅2551.

It can be written as a sum of positive squares in 2 ways, for example, as 14884 + 22801 = 122^2 + 151^2 .

It is a cyclic number.

It is not a de Polignac number, because 37685 - 2¹² = 33589 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, 3764 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (11307).

2³⁷⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

37685 is a deficient number, since it is larger than the sum of its proper divisors (7543).

37685 is an equidigital number, since it uses as much as digits as its factorization.

37685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542.

The product of its digits is 5040, while the sum is 29.

The square root of 37685 is about 194.1262475813. The cubic root of 37685 is about 33.5265995022.

It can be divided in two parts, 3768 and 5, that added together give a palindrome (3773).

The spelling of 37685 in words is "thirty-seven thousand, six hundred eighty-five".