667171255 has 8 divisors (see below), whose sum is σ = 803339712. Its totient is φ = 531914208.

The previous prime is 667171237. The next prime is 667171283. The reversal of 667171255 is 552171766.

It is a happy number.

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 667171255 - 2⁹ = 667170743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226239 + ... + 229168.

It is an arithmetic number, because the mean of its divisors is an integer number (100417464).

Almost surely, 2^667171255 is an apocalyptic number.

667171255 is a deficient number, since it is larger than the sum of its proper divisors (136168457).

667171255 is a wasteful number, since it uses less digits than its factorization.

667171255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455705.

The product of its digits is 88200, while the sum is 40.

The square root of 667171255 is about 25829.6584375404. The cubic root of 667171255 is about 873.8008084096.

The spelling of 667171255 in words is "six hundred sixty-seven million, one hundred seventy-one thousand, two hundred fifty-five".