3681206 has 4 divisors (see below), whose sum is σ = 5521812. Its totient is φ = 1840602.

The previous prime is 3681199. The next prime is 3681217. The reversal of 3681206 is 6021863.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×3681206³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920300 + ... + 920303.

It is an arithmetic number, because the mean of its divisors is an integer number (1380453).

Almost surely, 2^3681206 is an apocalyptic number.

3681206 is a deficient number, since it is larger than the sum of its proper divisors (1840606).

3681206 is a wasteful number, since it uses less digits than its factorization.

3681206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840605.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3681206 is about 1918.6469190552. The cubic root of 3681206 is about 154.4057160492.

The spelling of 3681206 in words is "three million, six hundred eighty-one thousand, two hundred six".