3666763681 has 8 divisors (see below), whose sum is σ = 4199339520. Its totient is φ = 3136375968.

The previous prime is 3666763679. The next prime is 3666763699. The reversal of 3666763681 is 1863676663.

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

It is a cyclic number.

It is not a de Polignac number, because 3666763681 - 2¹ = 3666763679 is a prime.

It is a super-2 number, since 2×3666763681² = 26890311784601339522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666763081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543436 + ... + 550141.

It is an arithmetic number, because the mean of its divisors is an integer number (524917440).

Almost surely, 2^3666763681 is an apocalyptic number.

It is an amenable number.

3666763681 is a deficient number, since it is larger than the sum of its proper divisors (532575839).

3666763681 is a wasteful number, since it uses less digits than its factorization.

3666763681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094063.

The product of its digits is 3919104, while the sum is 52.

The square root of 3666763681 is about 60553.8081461439. The cubic root of 3666763681 is about 1542.0352694444.

The spelling of 3666763681 in words is "three billion, six hundred sixty-six million, seven hundred sixty-three thousand, six hundred eighty-one".