667007065 has 24 divisors (see below), whose sum is σ = 865452168. Its totient is φ = 493136640.

The previous prime is 667007063. The next prime is 667007093. The reversal of 667007065 is 560700766.

667007065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 283024 + 666724041 = 532^2 + 25821^2 .

It is not a de Polignac number, because 667007065 - 2¹ = 667007063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667007063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69499 + ... + 78511.

It is an arithmetic number, because the mean of its divisors is an integer number (36060507).

Almost surely, 2^667007065 is an apocalyptic number.

It is an amenable number.

667007065 is a deficient number, since it is larger than the sum of its proper divisors (198445103).

667007065 is a wasteful number, since it uses less digits than its factorization.

667007065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097 (or 9078 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 667007065 is about 25826.4799188740. The cubic root of 667007065 is about 873.7291221049.

The spelling of 667007065 in words is "six hundred sixty-seven million, seven thousand, sixty-five".