38670685 has 4 divisors (see below), whose sum is σ = 46404828. Its totient is φ = 30936544.

The previous prime is 38670683. The next prime is 38670689. The reversal of 38670685 is 58607683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58607683 = 6481 ⋅9043.

It can be written as a sum of positive squares in 2 ways, for example, as 28153636 + 10517049 = 5306^2 + 3243^2 .

It is a cyclic number.

It is not a de Polignac number, because 38670685 - 2¹ = 38670683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38670683) 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, 3867064 + ... + 3867073.

It is an arithmetic number, because the mean of its divisors is an integer number (11601207).

Almost surely, 2^38670685 is an apocalyptic number.

It is an amenable number.

38670685 is a deficient number, since it is larger than the sum of its proper divisors (7734143).

38670685 is an equidigital number, since it uses as much as digits as its factorization.

38670685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7734142.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 38670685 is about 6218.5758015803. The cubic root of 38670685 is about 338.1639349249.

The spelling of 38670685 in words is "thirty-eight million, six hundred seventy thousand, six hundred eighty-five".