3685807 has 4 divisors (see below), whose sum is σ = 3804736. Its totient is φ = 3566880.

The previous prime is 3685783. The next prime is 3685811. The reversal of 3685807 is 7085863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7085863 = 23 ⋅308081.

It is a cyclic number.

It is not a de Polignac number, because 3685807 - 2¹⁹ = 3161519 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 (3685837) 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, 59418 + ... + 59479.

It is an arithmetic number, because the mean of its divisors is an integer number (951184).

Almost surely, 2^3685807 is an apocalyptic number.

3685807 is a deficient number, since it is larger than the sum of its proper divisors (118929).

3685807 is a wasteful number, since it uses less digits than its factorization.

3685807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118928.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 3685807 is about 1919.8455667058. The cubic root of 3685807 is about 154.4700178866.

The spelling of 3685807 in words is "three million, six hundred eighty-five thousand, eight hundred seven".