3672688681 has 2 divisors, whose sum is σ = 3672688682. Its totient is φ = 3672688680.

The previous prime is 3672688667. The next prime is 3672688697. The reversal of 3672688681 is 1868862763.

3672688681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3669936400 + 2752281 = 60580^2 + 1659^2 .

It is a cyclic number.

It is not a de Polignac number, because 3672688681 - 2²⁵ = 3639134249 is a prime.

It is a super-2 number, since 2×3672688681² = 26977284295091039522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3672688631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1836344340 + 1836344341.

It is an arithmetic number, because the mean of its divisors is an integer number (1836344341).

Almost surely, 2^3672688681 is an apocalyptic number.

It is an amenable number.

3672688681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3672688681 is an equidigital number, since it uses as much as digits as its factorization.

3672688681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 55.

The square root of 3672688681 is about 60602.7118287623. The cubic root of 3672688681 is about 1542.8653967743.

The spelling of 3672688681 in words is "three billion, six hundred seventy-two million, six hundred eighty-eight thousand, six hundred eighty-one".