4381685 has 32 divisors (see below), whose sum is σ = 6912000. Its totient is φ = 2583360.

The previous prime is 4381681. The next prime is 4381693. The reversal of 4381685 is 5861834.

It is not a de Polignac number, because 4381685 - 2² = 4381681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7016 + ... + 7614.

It is an arithmetic number, because the mean of its divisors is an integer number (216000).

Almost surely, 2^4381685 is an apocalyptic number.

It is an amenable number.

4381685 is a deficient number, since it is larger than the sum of its proper divisors (2530315).

4381685 is a wasteful number, since it uses less digits than its factorization.

4381685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641.

The product of its digits is 23040, while the sum is 35.

The square root of 4381685 is about 2093.2474770079. The cubic root of 4381685 is about 163.6365762717.

The spelling of 4381685 in words is "four million, three hundred eighty-one thousand, six hundred eighty-five".