667880617417 has 32 divisors (see below), whose sum is σ = 765197189120. Its totient is φ = 577831060800.

The previous prime is 667880617409. The next prime is 667880617477. The reversal of 667880617417 is 714716088766.

It is a cyclic number.

It is not a de Polignac number, because 667880617417 - 2³ = 667880617409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667880617477) 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 31 ways as a sum of consecutive naturals, for example, 27642292 + ... + 27666442.

It is an arithmetic number, because the mean of its divisors is an integer number (23912412160).

Almost surely, 2^667880617417 is an apocalyptic number.

It is an amenable number.

667880617417 is a deficient number, since it is larger than the sum of its proper divisors (97316571703).

667880617417 is a wasteful number, since it uses less digits than its factorization.

667880617417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25373.

The product of its (nonzero) digits is 18966528, while the sum is 61.

The spelling of 667880617417 in words is "six hundred sixty-seven billion, eight hundred eighty million, six hundred seventeen thousand, four hundred seventeen".