3627718666 has 48 divisors (see below), whose sum is σ = 6563170152. Its totient is φ = 1493331840.

The previous prime is 3627718651. The next prime is 3627718669. The reversal of 3627718666 is 6668177263.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3449095441 + 178623225 = 58729^2 + 13365^2 .

It is not an unprimeable number, because it can be changed into a prime (3627718669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155860 + ... + 177616.

Almost surely, 2^3627718666 is an apocalyptic number.

3627718666 is a deficient number, since it is larger than the sum of its proper divisors (2935451486).

3627718666 is a wasteful number, since it uses less digits than its factorization.

3627718666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21847 (or 21836 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 52.

The square root of 3627718666 is about 60230.5459546898. The cubic root of 3627718666 is about 1536.5423446166.

The spelling of 3627718666 in words is "three billion, six hundred twenty-seven million, seven hundred eighteen thousand, six hundred sixty-six".