3685851 has 16 divisors (see below), whose sum is σ = 5881120. Its totient is φ = 2268000.

The previous prime is 3685849. The next prime is 3685861. The reversal of 3685851 is 1585863.

It is not a de Polignac number, because 3685851 - 2¹ = 3685849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4900 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (367570).

Almost surely, 2^3685851 is an apocalyptic number.

3685851 is a deficient number, since it is larger than the sum of its proper divisors (2195269).

3685851 is a wasteful number, since it uses less digits than its factorization.

3685851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10523 (or 10517 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 3685851 is about 1919.8570259267. The cubic root of 3685851 is about 154.4706325556.

The spelling of 3685851 in words is "three million, six hundred eighty-five thousand, eight hundred fifty-one".