3689966551 has 4 divisors (see below), whose sum is σ = 3740514112. Its totient is φ = 3639418992.

The previous prime is 3689966543. The next prime is 3689966563. The reversal of 3689966551 is 1556699863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1556699863 = 367 ⋅4241689.

It is a cyclic number.

It is not a de Polignac number, because 3689966551 - 2³ = 3689966543 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 (3689966531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25273671 + ... + 25273816.

It is an arithmetic number, because the mean of its divisors is an integer number (935128528).

Almost surely, 2^3689966551 is an apocalyptic number.

3689966551 is a deficient number, since it is larger than the sum of its proper divisors (50547561).

3689966551 is an equidigital number, since it uses as much as digits as its factorization.

3689966551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50547560.

The product of its digits is 10497600, while the sum is 58.

The square root of 3689966551 is about 60745.0948719318. The cubic root of 3689966551 is about 1545.2810415874.

The spelling of 3689966551 in words is "three billion, six hundred eighty-nine million, nine hundred sixty-six thousand, five hundred fifty-one".