667612227 has 8 divisors (see below), whose sum is σ = 890396416. Its totient is φ = 444951432.

The previous prime is 667612213. The next prime is 667612259. The reversal of 667612227 is 722216766.

It is a happy number.

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

It is not a de Polignac number, because 667612227 - 2²³ = 659223619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667612207) 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, 17383 + ... + 40464.

It is an arithmetic number, because the mean of its divisors is an integer number (111299552).

Almost surely, 2^667612227 is an apocalyptic number.

667612227 is a deficient number, since it is larger than the sum of its proper divisors (222784189).

667612227 is a wasteful number, since it uses less digits than its factorization.

667612227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61697.

The product of its digits is 84672, while the sum is 39.

The square root of 667612227 is about 25838.1931837348. The cubic root of 667612227 is about 873.9932811441.

The spelling of 667612227 in words is "six hundred sixty-seven million, six hundred twelve thousand, two hundred twenty-seven".