4170685 has 4 divisors (see below), whose sum is σ = 5004828. Its totient is φ = 3336544.

The previous prime is 4170679. The next prime is 4170703. The reversal of 4170685 is 5860714.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5860714 = 2 ⋅2930357.

It can be written as a sum of positive squares in 2 ways, for example, as 1792921 + 2377764 = 1339^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 4170685 - 2¹³ = 4162493 is a prime.

It is a super-2 number, since 2×4170685² = 34789226738450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 417064 + ... + 417073.

It is an arithmetic number, because the mean of its divisors is an integer number (1251207).

Almost surely, 2^4170685 is an apocalyptic number.

It is an amenable number.

4170685 is a deficient number, since it is larger than the sum of its proper divisors (834143).

4170685 is an equidigital number, since it uses as much as digits as its factorization.

4170685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834142.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 4170685 is about 2042.2255017505. The cubic root of 4170685 is about 160.9666095898.

The spelling of 4170685 in words is "four million, one hundred seventy thousand, six hundred eighty-five".