3681228066 has 8 divisors (see below), whose sum is σ = 7362456144. Its totient is φ = 1227076020.

The previous prime is 3681228053. The next prime is 3681228079. The reversal of 3681228066 is 6608221863.

3681228066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3681228053) and next prime (3681228079).

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

3681228066 is an admirable number.

It is a super-2 number, since 2×3681228066² = 27102880147812200712, which contains 22 as substring.

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, 306769000 + ... + 306769011.

It is an arithmetic number, because the mean of its divisors is an integer number (920307018).

Almost surely, 2^3681228066 is an apocalyptic number.

3681228066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681228066 is a wasteful number, since it uses less digits than its factorization.

3681228066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613538016.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 3681228066 is about 60673.1247423437. The cubic root of 3681228066 is about 1544.0602456313.

The spelling of 3681228066 in words is "three billion, six hundred eighty-one million, two hundred twenty-eight thousand, sixty-six".