667216076587 has 2 divisors, whose sum is σ = 667216076588. Its totient is φ = 667216076586.

The previous prime is 667216076543. The next prime is 667216076621. The reversal of 667216076587 is 785670612766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667216076587 - 2¹⁹ = 667215552299 is a prime.

It is a super-2 number, since 2×667216076587² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667216076507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333608038293 + 333608038294.

It is an arithmetic number, because the mean of its divisors is an integer number (333608038294).

Almost surely, 2^667216076587 is an apocalyptic number.

667216076587 is a deficient number, since it is larger than the sum of its proper divisors (1).

667216076587 is an equidigital number, since it uses as much as digits as its factorization.

667216076587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 667216076587 in words is "six hundred sixty-seven billion, two hundred sixteen million, seventy-six thousand, five hundred eighty-seven".