6393627665 has 16 divisors (see below), whose sum is σ = 8202549888. Its totient is φ = 4767280896.

The previous prime is 6393627641. The next prime is 6393627671. The reversal of 6393627665 is 5667263936.

It is not a de Polignac number, because 6393627665 - 2⁶ = 6393627601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356387 + ... + 373896.

It is an arithmetic number, because the mean of its divisors is an integer number (512659368).

Almost surely, 2^6393627665 is an apocalyptic number.

It is an amenable number.

6393627665 is a deficient number, since it is larger than the sum of its proper divisors (1808922223).

6393627665 is a wasteful number, since it uses less digits than its factorization.

6393627665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730408.

The product of its digits is 7348320, while the sum is 53.

The square root of 6393627665 is about 79960.1629875778. The cubic root of 6393627665 is about 1856.0191255066.

The spelling of 6393627665 in words is "six billion, three hundred ninety-three million, six hundred twenty-seven thousand, six hundred sixty-five".