667210232217 has 4 divisors (see below), whose sum is σ = 889613642960. Its totient is φ = 444806821476.

The previous prime is 667210232153. The next prime is 667210232279. The reversal of 667210232217 is 712232012766.

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 not a de Polignac number, because 667210232217 - 2⁶ = 667210232153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667210232617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111201705367 + ... + 111201705372.

It is an arithmetic number, because the mean of its divisors is an integer number (222403410740).

Almost surely, 2^667210232217 is an apocalyptic number.

It is an amenable number.

667210232217 is a deficient number, since it is larger than the sum of its proper divisors (222403410743).

667210232217 is a wasteful number, since it uses less digits than its factorization.

667210232217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222403410742.

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

The spelling of 667210232217 in words is "six hundred sixty-seven billion, two hundred ten million, two hundred thirty-two thousand, two hundred seventeen".