3685870 has 16 divisors (see below), whose sum is σ = 6671808. Its totient is φ = 1466080.

The previous prime is 3685861. The next prime is 3685879. The reversal of 3685870 is 785863.

It is an interprime number because it is at equal distance from previous prime (3685861) and next prime (3685879).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035 + ... + 2905.

It is an arithmetic number, because the mean of its divisors is an integer number (416988).

Almost surely, 2^3685870 is an apocalyptic number.

3685870 is a deficient number, since it is larger than the sum of its proper divisors (2985938).

3685870 is a wasteful number, since it uses less digits than its factorization.

3685870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

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

The square root of 3685870 is about 1919.8619742054. The cubic root of 3685870 is about 154.4708979793.

The spelling of 3685870 in words is "three million, six hundred eighty-five thousand, eight hundred seventy".