665267270807 has 8 divisors (see below), whose sum is σ = 704715566256. Its totient is φ = 625853967232.

The previous prime is 665267270779. The next prime is 665267270819. The reversal of 665267270807 is 708072762566.

665267270807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 665267270807 - 2¹⁴ = 665267254423 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 (665267270887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8708813 + ... + 8784870.

It is an arithmetic number, because the mean of its divisors is an integer number (88089445782).

Almost surely, 2^665267270807 is an apocalyptic number.

665267270807 is a deficient number, since it is larger than the sum of its proper divisors (39448295449).

665267270807 is a wasteful number, since it uses less digits than its factorization.

665267270807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495937.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 665267270807 in words is "six hundred sixty-five billion, two hundred sixty-seven million, two hundred seventy thousand, eight hundred seven".