3705986 has 8 divisors (see below), whose sum is σ = 5588364. Its totient is φ = 1843200.

The previous prime is 3705959. The next prime is 3706009. The reversal of 3705986 is 6895073.

It can be written as a sum of positive squares in 2 ways, for example, as 3705625 + 361 = 1925^2 + 19^2 .

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 7² + 0 + 5³ + 9⁴ + 8⁷ + 6⁵ .

It is a Curzon 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, 4415 + ... + 5186.

Almost surely, 2^3705986 is an apocalyptic number.

3705986 is a deficient number, since it is larger than the sum of its proper divisors (1882378).

3705986 is a wasteful number, since it uses less digits than its factorization.

3705986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3705986 is about 1925.0937639502. The cubic root of 3705986 is about 154.7514017044.

The spelling of 3705986 in words is "three million, seven hundred five thousand, nine hundred eighty-six".