3716665 has 4 divisors (see below), whose sum is σ = 4460004. Its totient is φ = 2973328.

The previous prime is 3716663. The next prime is 3716677. The reversal of 3716665 is 5666173.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5666173 = 439 ⋅12907.

It can be written as a sum of positive squares in 2 ways, for example, as 2913849 + 802816 = 1707^2 + 896^2 .

It is a cyclic number.

It is not a de Polignac number, because 3716665 - 2¹ = 3716663 is a prime.

It is a Duffinian number.

3716665 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3716665.

It is not an unprimeable number, because it can be changed into a prime (3716663) 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, 371662 + ... + 371671.

It is an arithmetic number, because the mean of its divisors is an integer number (1115001).

Almost surely, 2^3716665 is an apocalyptic number.

It is an amenable number.

3716665 is a deficient number, since it is larger than the sum of its proper divisors (743339).

3716665 is an equidigital number, since it uses as much as digits as its factorization.

3716665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743338.

The product of its digits is 22680, while the sum is 34.

The square root of 3716665 is about 1927.8653998659. The cubic root of 3716665 is about 154.8999006835.

It can be divided in two parts, 37 and 16665, that multiplied together give a triangular number (616605 = T₁₁₁₀).

The spelling of 3716665 in words is "three million, seven hundred sixteen thousand, six hundred sixty-five".