3666786 has 8 divisors (see below), whose sum is σ = 7333584. Its totient is φ = 1222260.

The previous prime is 3666757. The next prime is 3666787. The reversal of 3666786 is 6876663.

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

3666786 is an admirable number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹¹ + 6⁴ + 6⁵ + 6⁷ + 7⁷ + 8⁷ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (3666787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305560 + ... + 305571.

It is an arithmetic number, because the mean of its divisors is an integer number (916698).

Almost surely, 2^3666786 is an apocalyptic number.

3666786 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.

3666786 is a wasteful number, since it uses less digits than its factorization.

3666786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611136.

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

The square root of 3666786 is about 1914.8853751596. The cubic root of 3666786 is about 154.2038398145.

The spelling of 3666786 in words is "three million, six hundred sixty-six thousand, seven hundred eighty-six".