3825686 has 4 divisors (see below), whose sum is σ = 5738532. Its totient is φ = 1912842.

The previous prime is 3825683. The next prime is 3825691. The reversal of 3825686 is 6865283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6865283 = 293 ⋅23431.

It is a d-powerful number, because it can be written as 3⁴ + 8 + 2¹¹ + 5³ + 6⁶ + 8⁷ + 6⁸ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3825683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956420 + ... + 956423.

It is an arithmetic number, because the mean of its divisors is an integer number (1434633).

Almost surely, 2^3825686 is an apocalyptic number.

3825686 is a deficient number, since it is larger than the sum of its proper divisors (1912846).

3825686 is a wasteful number, since it uses less digits than its factorization.

3825686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912845.

The product of its digits is 69120, while the sum is 38.

The square root of 3825686 is about 1955.9360930255. The cubic root of 3825686 is about 156.3998890204.

The spelling of 3825686 in words is "three million, eight hundred twenty-five thousand, six hundred eighty-six".