3786665 has 8 divisors (see below), whose sum is σ = 4811400. Its totient is φ = 2851072.

The previous prime is 3786661. The next prime is 3786667. The reversal of 3786665 is 5666873.

It can be written as a sum of positive squares in 4 ways, for example, as 267289 + 3519376 = 517^2 + 1876^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3786665 - 2² = 3786661 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 7⁵ + 8⁷ + 6 + 6² + 6³ + 5⁷ .

It is not an unprimeable number, because it can be changed into a prime (3786661) 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 in 7 ways as a sum of consecutive naturals, for example, 22190 + ... + 22359.

It is an arithmetic number, because the mean of its divisors is an integer number (601425).

Almost surely, 2^3786665 is an apocalyptic number.

It is an amenable number.

3786665 is a deficient number, since it is larger than the sum of its proper divisors (1024735).

3786665 is a wasteful number, since it uses less digits than its factorization.

3786665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44571.

The product of its digits is 181440, while the sum is 41.

The square root of 3786665 is about 1945.9355076672. The cubic root of 3786665 is about 155.8663247818.

The spelling of 3786665 in words is "three million, seven hundred eighty-six thousand, six hundred sixty-five".