3681066540 has 24 divisors (see below), whose sum is σ = 10306986480. Its totient is φ = 981617728.

The previous prime is 3681066481. The next prime is 3681066569. The reversal of 3681066540 is 456601863.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30675495 + ... + 30675614.

It is an arithmetic number, because the mean of its divisors is an integer number (429457770).

Almost surely, 2^3681066540 is an apocalyptic number.

3681066540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3681066540 is an abundant number, since it is smaller than the sum of its proper divisors (6625919940).

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

3681066540 is a wasteful number, since it uses less digits than its factorization.

3681066540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61351121 (or 61351119 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 3681066540 is about 60671.7936111996. The cubic root of 3681066540 is about 1544.0376617255.

The spelling of 3681066540 in words is "three billion, six hundred eighty-one million, sixty-six thousand, five hundred forty".