3815564 has 18 divisors (see below), whose sum is σ = 6807780. Its totient is φ = 1871136.

The previous prime is 3815563. The next prime is 3815569. The reversal of 3815564 is 4655183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3815564.

It is not an unprimeable number, because it can be changed into a prime (3815563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21227 + ... + 21405.

It is an arithmetic number, because the mean of its divisors is an integer number (378210).

Almost surely, 2^3815564 is an apocalyptic number.

It is an amenable number.

3815564 is a deficient number, since it is larger than the sum of its proper divisors (2992216).

3815564 is a wasteful number, since it uses less digits than its factorization.

3815564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 254 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 3815564 is about 1953.3468713979. The cubic root of 3815564 is about 156.2618329172.

The spelling of 3815564 in words is "three million, eight hundred fifteen thousand, five hundred sixty-four".