667775317 has 8 divisors (see below), whose sum is σ = 771334272. Its totient is φ = 571358400.

The previous prime is 667775299. The next prime is 667775327. The reversal of 667775317 is 713577766.

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 667775317 - 2¹⁵ = 667742549 is a prime.

It is a super-3 number, since 3×667775317³ (a number of 27 digits) contains 333 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 (667775327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785309 + ... + 1785682.

It is an arithmetic number, because the mean of its divisors is an integer number (96416784).

Almost surely, 2^667775317 is an apocalyptic number.

It is an amenable number.

667775317 is a deficient number, since it is larger than the sum of its proper divisors (103558955).

667775317 is a wasteful number, since it uses less digits than its factorization.

667775317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571019.

The product of its digits is 1296540, while the sum is 49.

The square root of 667775317 is about 25841.3489779462. The cubic root of 667775317 is about 874.0644441901.

The spelling of 667775317 in words is "six hundred sixty-seven million, seven hundred seventy-five thousand, three hundred seventeen".