667214322809 has 8 divisors (see below), whose sum is σ = 696231916992. Its totient is φ = 638197418320.

The previous prime is 667214322793. The next prime is 667214322893. The reversal of 667214322809 is 908223412766.

667214322809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 667214322809 - 2⁴ = 667214322793 is a prime.

It is a super-2 number, since 2×667214322809² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667214822809) 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, 3250199 + ... + 3449379.

It is an arithmetic number, because the mean of its divisors is an integer number (87028989624).

Almost surely, 2^667214322809 is an apocalyptic number.

It is an amenable number.

667214322809 is a deficient number, since it is larger than the sum of its proper divisors (29017594183).

667214322809 is a wasteful number, since it uses less digits than its factorization.

667214322809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344847.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 667214322809 in words is "six hundred sixty-seven billion, two hundred fourteen million, three hundred twenty-two thousand, eight hundred nine".