3666678 has 8 divisors (see below), whose sum is σ = 7333368. Its totient is φ = 1222224.

The previous prime is 3666661. The next prime is 3666703. The reversal of 3666678 is 8766663.

It is a sphenic number, since it is the product of 3 distinct primes.

3666678 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305551 + ... + 305562.

It is an arithmetic number, because the mean of its divisors is an integer number (916671).

Almost surely, 2^3666678 is an apocalyptic number.

3666678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3666678 is a wasteful number, since it uses less digits than its factorization.

3666678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611118.

The product of its digits is 217728, while the sum is 42.

The square root of 3666678 is about 1914.8571748305. The cubic root of 3666678 is about 154.2023258476.

The spelling of 3666678 in words is "three million, six hundred sixty-six thousand, six hundred seventy-eight".