3707665647 has 16 divisors (see below), whose sum is σ = 5658143232. Its totient is φ = 2115528480.

The previous prime is 3707665613. The next prime is 3707665651. The reversal of 3707665647 is 7465667073.

3707665647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3707665647 - 2¹⁴ = 3707649263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3707665647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3707663647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116179 + ... + 144612.

It is an arithmetic number, because the mean of its divisors is an integer number (353633952).

Almost surely, 2^3707665647 is an apocalyptic number.

3707665647 is a deficient number, since it is larger than the sum of its proper divisors (1950477585).

3707665647 is a wasteful number, since it uses less digits than its factorization.

3707665647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261478.

The product of its (nonzero) digits is 4445280, while the sum is 51.

The square root of 3707665647 is about 60890.6039303274. The cubic root of 3707665647 is about 1547.7477726214.

The spelling of 3707665647 in words is "three billion, seven hundred seven million, six hundred sixty-five thousand, six hundred forty-seven".