667728466341 has 16 divisors (see below), whose sum is σ = 924506732160. Its totient is φ = 428167987520.

The previous prime is 667728466231. The next prime is 667728466469. The reversal of 667728466341 is 143664827766.

It is a cyclic number.

It is not a de Polignac number, because 667728466341 - 2⁷ = 667728466213 is a prime.

It is a super-2 number, since 2×667728466341² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667728466541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14568450 + ... + 14614211.

It is an arithmetic number, because the mean of its divisors is an integer number (57781670760).

Almost surely, 2^667728466341 is an apocalyptic number.

It is an amenable number.

667728466341 is a deficient number, since it is larger than the sum of its proper divisors (256778265819).

667728466341 is a wasteful number, since it uses less digits than its factorization.

667728466341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29182956.

The product of its digits is 48771072, while the sum is 60.

The spelling of 667728466341 in words is "six hundred sixty-seven billion, seven hundred twenty-eight million, four hundred sixty-six thousand, three hundred forty-one".