3665707688 has 64 divisors (see below), whose sum is σ = 7587898560. Its totient is φ = 1652990976.

The previous prime is 3665707681. The next prime is 3665707691. The reversal of 3665707688 is 8867075663.

It is a happy number.

3665707688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3665707681) 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, 304031 + ... + 315857.

It is an arithmetic number, because the mean of its divisors is an integer number (118560915).

Almost surely, 2^3665707688 is an apocalyptic number.

It is an amenable number.

3665707688 is an abundant number, since it is smaller than the sum of its proper divisors (3922190872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665707688 is a wasteful number, since it uses less digits than its factorization.

3665707688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11946 (or 11942 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 56.

The square root of 3665707688 is about 60545.0880584049. The cubic root of 3665707688 is about 1541.8872247437.

The spelling of 3665707688 in words is "three billion, six hundred sixty-five million, seven hundred seven thousand, six hundred eighty-eight".