3681066836 has 12 divisors (see below), whose sum is σ = 6445319412. Its totient is φ = 1839547008.

The previous prime is 3681066833. The next prime is 3681066863. The reversal of 3681066836 is 6386601863.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 249450436 + 3431616400 = 15794^2 + 58580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681066833) 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, 238175 + ... + 253158.

It is an arithmetic number, because the mean of its divisors is an integer number (537109951).

Almost surely, 2^3681066836 is an apocalyptic number.

It is an amenable number.

3681066836 is a deficient number, since it is larger than the sum of its proper divisors (2764252576).

3681066836 is a wasteful number, since it uses less digits than its factorization.

3681066836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493210 (or 493208 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 3681066836 is about 60671.7960505538. The cubic root of 3681066836 is about 1544.0377031116.

The spelling of 3681066836 in words is "three billion, six hundred eighty-one million, sixty-six thousand, eight hundred thirty-six".