667272201 has 4 divisors (see below), whose sum is σ = 889696272. Its totient is φ = 444848132.

The previous prime is 667272181. The next prime is 667272209. The reversal of 667272201 is 102272766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667272201 - 2⁵ = 667272169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667272209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111212031 + ... + 111212036.

It is an arithmetic number, because the mean of its divisors is an integer number (222424068).

Almost surely, 2^667272201 is an apocalyptic number.

It is an amenable number.

667272201 is a deficient number, since it is larger than the sum of its proper divisors (222424071).

667272201 is a wasteful number, since it uses less digits than its factorization.

667272201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222424070.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 667272201 is about 25831.6124351539. The cubic root of 667272201 is about 873.8448761795.

The spelling of 667272201 in words is "six hundred sixty-seven million, two hundred seventy-two thousand, two hundred one".