667727322667170 has 48 divisors (see below), whose sum is σ = 1647028212798528. Its totient is φ = 173248170194880.

The previous prime is 667727322667063. The next prime is 667727322667177. The reversal of 667727322667170 is 71766223727766.

It is a super-3 number, since 3×667727322667170³ (a number of 45 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 667727322667095 and 667727322667104.

It is not an unprimeable number, because it can be changed into a prime (667727322667177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8129096046 + ... + 8129178185.

It is an arithmetic number, because the mean of its divisors is an integer number (34313087766636).

Almost surely, 2^{667727322667170} is an apocalyptic number.

667727322667170 is an abundant number, since it is smaller than the sum of its proper divisors (979300890131358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667727322667170 is a wasteful number, since it uses less digits than its factorization.

667727322667170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258274315 (or 16258274278 counting only the distinct ones).

The product of its (nonzero) digits is 522764928, while the sum is 69.

The spelling of 667727322667170 in words is "six hundred sixty-seven trillion, seven hundred twenty-seven billion, three hundred twenty-two million, six hundred sixty-seven thousand, one hundred seventy".