3685678 has 4 divisors (see below), whose sum is σ = 5528520. Its totient is φ = 1842838.

The previous prime is 3685663. The next prime is 3685687. The reversal of 3685678 is 8765863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8765863 = 17 ⋅515639.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921418 + ... + 921421.

It is an arithmetic number, because the mean of its divisors is an integer number (1382130).

Almost surely, 2^3685678 is an apocalyptic number.

3685678 is a deficient number, since it is larger than the sum of its proper divisors (1842842).

3685678 is a wasteful number, since it uses less digits than its factorization.

3685678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842841.

The product of its digits is 241920, while the sum is 43.

The square root of 3685678 is about 1919.8119699596. The cubic root of 3685678 is about 154.4682157607.

The spelling of 3685678 in words is "three million, six hundred eighty-five thousand, six hundred seventy-eight".