667075001 has 4 divisors (see below), whose sum is σ = 669483492. Its totient is φ = 664666512.

The previous prime is 667074983. The next prime is 667075021. The reversal of 667075001 is 100570766.

667075001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 270109225 + 396965776 = 16435^2 + 19924^2 .

It is a cyclic number.

It is not a de Polignac number, because 667075001 - 2¹⁸ = 666812857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667075021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203830 + ... + 1204383.

It is an arithmetic number, because the mean of its divisors is an integer number (167370873).

Almost surely, 2^667075001 is an apocalyptic number.

It is an amenable number.

667075001 is a deficient number, since it is larger than the sum of its proper divisors (2408491).

667075001 is a wasteful number, since it uses less digits than its factorization.

667075001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408490.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 667075001 is about 25827.7951246327. The cubic root of 667075001 is about 873.7587847825.

The spelling of 667075001 in words is "six hundred sixty-seven million, seventy-five thousand, one".