3681878 has 4 divisors (see below), whose sum is σ = 5522820. Its totient is φ = 1840938.

The previous prime is 3681871. The next prime is 3681889. The reversal of 3681878 is 8781863.

3681878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920468 + ... + 920471.

It is an arithmetic number, because the mean of its divisors is an integer number (1380705).

Almost surely, 2^3681878 is an apocalyptic number.

3681878 is a deficient number, since it is larger than the sum of its proper divisors (1840942).

3681878 is a wasteful number, since it uses less digits than its factorization.

3681878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840941.

The product of its digits is 64512, while the sum is 41.

The square root of 3681878 is about 1918.8220344784. The cubic root of 3681878 is about 154.4151110073.

The spelling of 3681878 in words is "three million, six hundred eighty-one thousand, eight hundred seventy-eight".