3878684 has 6 divisors (see below), whose sum is σ = 6787704. Its totient is φ = 1939340.

The previous prime is 3878681. The next prime is 3878687. The reversal of 3878684 is 4868783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3878681) and next prime (3878687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484832 + ... + 484839.

It is an arithmetic number, because the mean of its divisors is an integer number (1131284).

Almost surely, 2^3878684 is an apocalyptic number.

It is an amenable number.

3878684 is a deficient number, since it is larger than the sum of its proper divisors (2909020).

3878684 is a wasteful number, since it uses less digits than its factorization.

3878684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969675 (or 969673 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 3878684 is about 1969.4374831408. The cubic root of 3878684 is about 157.1187925369.

Subtracting 3878684 from its reverse (4868783), we obtain a palindrome (990099).

The spelling of 3878684 in words is "three million, eight hundred seventy-eight thousand, six hundred eighty-four".