3878637 has 16 divisors (see below), whose sum is σ = 5947392. Its totient is φ = 2202480.

The previous prime is 3878629. The next prime is 3878647. The reversal of 3878637 is 7368783.

It is a happy number.

It is not a de Polignac number, because 3878637 - 2³ = 3878629 is a prime.

It is an Ulam number.

3878637 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528 + ... + 4494.

It is an arithmetic number, because the mean of its divisors is an integer number (371712).

Almost surely, 2^3878637 is an apocalyptic number.

It is an amenable number.

3878637 is a deficient number, since it is larger than the sum of its proper divisors (2068755).

3878637 is a wasteful number, since it uses less digits than its factorization.

3878637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168.

The product of its digits is 169344, while the sum is 42.

The square root of 3878637 is about 1969.4255507635. The cubic root of 3878637 is about 157.1181579048.

The spelling of 3878637 in words is "three million, eight hundred seventy-eight thousand, six hundred thirty-seven".