3689980647 has 4 divisors (see below), whose sum is σ = 4919974200. Its totient is φ = 2459987096.

The previous prime is 3689980639. The next prime is 3689980661. The reversal of 3689980647 is 7460899863.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3689980647 - 2³ = 3689980639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689980627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614996772 + ... + 614996777.

It is an arithmetic number, because the mean of its divisors is an integer number (1229993550).

Almost surely, 2^3689980647 is an apocalyptic number.

3689980647 is a deficient number, since it is larger than the sum of its proper divisors (1229993553).

3689980647 is a wasteful number, since it uses less digits than its factorization.

3689980647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229993552.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The square root of 3689980647 is about 60745.2108976502. The cubic root of 3689980647 is about 1545.2830092885.

The spelling of 3689980647 in words is "three billion, six hundred eighty-nine million, nine hundred eighty thousand, six hundred forty-seven".