3687221775 has 12 divisors (see below), whose sum is σ = 6096206792. Its totient is φ = 1966518240.

The previous prime is 3687221743. The next prime is 3687221777. The reversal of 3687221775 is 5771227863.

It is not a de Polignac number, because 3687221775 - 2⁵ = 3687221743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3687221777) 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 11 ways as a sum of consecutive naturals, for example, 24581404 + ... + 24581553.

Almost surely, 2^3687221775 is an apocalyptic number.

3687221775 is a deficient number, since it is larger than the sum of its proper divisors (2408985017).

3687221775 is a wasteful number, since it uses less digits than its factorization.

3687221775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49162970 (or 49162965 counting only the distinct ones).

The product of its digits is 987840, while the sum is 48.

The square root of 3687221775 is about 60722.4980958458. The cubic root of 3687221775 is about 1544.8977948959.

The spelling of 3687221775 in words is "three billion, six hundred eighty-seven million, two hundred twenty-one thousand, seven hundred seventy-five".