3815864 has 16 divisors (see below), whose sum is σ = 7705320. Its totient is φ = 1761120.

The previous prime is 3815843. The next prime is 3815869. The reversal of 3815864 is 4685183.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3815869) 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, 18242 + ... + 18449.

Almost surely, 2^3815864 is an apocalyptic number.

It is an amenable number.

3815864 is an abundant number, since it is smaller than the sum of its proper divisors (3889456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3815864 is a wasteful number, since it uses less digits than its factorization.

3815864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36710 (or 36706 counting only the distinct ones).

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

The square root of 3815864 is about 1953.4236611652. The cubic root of 3815864 is about 156.2659281896.

The spelling of 3815864 in words is "three million, eight hundred fifteen thousand, eight hundred sixty-four".