3778864 has 20 divisors (see below), whose sum is σ = 7395856. Its totient is φ = 1870272.

The previous prime is 3778861. The next prime is 3778897. The reversal of 3778864 is 4688773.

3778864 is nontrivially palindromic in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 3778864.

It is not an unprimeable number, because it can be changed into a prime (3778861) 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, 502 + ... + 2794.

Almost surely, 2^3778864 is an apocalyptic number.

It is an amenable number.

3778864 is a deficient number, since it is larger than the sum of its proper divisors (3616992).

3778864 is a wasteful number, since it uses less digits than its factorization.

3778864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404 (or 2398 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 3778864 is about 1943.9300398934. The cubic root of 3778864 is about 155.7592165362.

Subtracting 3778864 from its reverse (4688773), we obtain a palindrome (909909).

The spelling of 3778864 in words is "three million, seven hundred seventy-eight thousand, eight hundred sixty-four".