3689878 has 4 divisors (see below), whose sum is σ = 5534820. Its totient is φ = 1844938.

The previous prime is 3689869. The next prime is 3689887. The reversal of 3689878 is 8789863.

It is a happy number.

3689878 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, and also an emirpimes, since its reverse is a distinct semiprime: 8789863 = 487 ⋅18049.

It is an interprime number because it is at equal distance from previous prime (3689869) and next prime (3689887).

It is a congruent number.

It is an unprimeable number.

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, 922468 + ... + 922471.

It is an arithmetic number, because the mean of its divisors is an integer number (1383705).

Almost surely, 2^3689878 is an apocalyptic number.

3689878 is a deficient number, since it is larger than the sum of its proper divisors (1844942).

3689878 is a wasteful number, since it uses less digits than its factorization.

3689878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844941.

The product of its digits is 580608, while the sum is 49.

The square root of 3689878 is about 1920.9055156358. The cubic root of 3689878 is about 154.5268680384.

The spelling of 3689878 in words is "three million, six hundred eighty-nine thousand, eight hundred seventy-eight".