667327231 has 8 divisors (see below), whose sum is σ = 711977904. Its totient is φ = 623276160.

The previous prime is 667327223. The next prime is 667327247. The reversal of 667327231 is 132723766.

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 667327231 - 2³ = 667327223 is a prime.

It is a super-2 number, since 2×667327231² = 890651266468254722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667327201) 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, 147600 + ... + 152053.

It is an arithmetic number, because the mean of its divisors is an integer number (88997238).

Almost surely, 2^667327231 is an apocalyptic number.

667327231 is a deficient number, since it is larger than the sum of its proper divisors (44650673).

667327231 is a wasteful number, since it uses less digits than its factorization.

667327231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299801.

The product of its digits is 63504, while the sum is 37.

The square root of 667327231 is about 25832.6775809245. The cubic root of 667327231 is about 873.8688975417.

The spelling of 667327231 in words is "six hundred sixty-seven million, three hundred twenty-seven thousand, two hundred thirty-one".