3878775 has 18 divisors (see below), whose sum is σ = 6947720. Its totient is φ = 2068560.

The previous prime is 3878773. The next prime is 3878783. The reversal of 3878775 is 5778783.

It is not a de Polignac number, because 3878775 - 2¹ = 3878773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3878775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878773) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8395 + ... + 8844.

Almost surely, 2^3878775 is an apocalyptic number.

3878775 is a deficient number, since it is larger than the sum of its proper divisors (3068945).

3878775 is a wasteful number, since it uses less digits than its factorization.

3878775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17255 (or 17247 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 3878775 is about 1969.4605860489. The cubic root of 3878775 is about 157.1200212783.

The spelling of 3878775 in words is "three million, eight hundred seventy-eight thousand, seven hundred seventy-five".