3901685 has 8 divisors (see below), whose sum is σ = 4700376. Its totient is φ = 3109120.

The previous prime is 3901679. The next prime is 3901693. The reversal of 3901685 is 5861093.

It can be written as a sum of positive squares in 4 ways, for example, as 188356 + 3713329 = 434^2 + 1927^2 .

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

It is not a de Polignac number, because 3901685 - 2¹⁸ = 3639541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (587547).

Almost surely, 2^3901685 is an apocalyptic number.

It is an amenable number.

3901685 is a deficient number, since it is larger than the sum of its proper divisors (798691).

3901685 is a wasteful number, since it uses less digits than its factorization.

3901685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3901685 is about 1975.2683362014. The cubic root of 3901685 is about 157.4287575671.

The spelling of 3901685 in words is "three million, nine hundred one thousand, six hundred eighty-five".