3766368681 has 6 divisors (see below), whose sum is σ = 5440310330. Its totient is φ = 2510912448.

The previous prime is 3766368673. The next prime is 3766368709. The reversal of 3766368681 is 1868636673.

It can be written as a sum of positive squares in only one way, i.e., 3434546025 + 331822656 = 58605^2 + 18216^2 .

It is not a de Polignac number, because 3766368681 - 2³ = 3766368673 is a prime.

It is a super-2 number, since 2×3766368681² = 28371066082435359522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3766368601) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 209242696 + ... + 209242713.

Almost surely, 2^3766368681 is an apocalyptic number.

It is an amenable number.

3766368681 is a deficient number, since it is larger than the sum of its proper divisors (1673941649).

3766368681 is a wasteful number, since it uses less digits than its factorization.

3766368681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418485415 (or 418485412 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 3766368681 is about 61370.7477630833. The cubic root of 3766368681 is about 1555.8734740321.

The spelling of 3766368681 in words is "three billion, seven hundred sixty-six million, three hundred sixty-eight thousand, six hundred eighty-one".