667210550087 has 2 divisors, whose sum is σ = 667210550088. Its totient is φ = 667210550086.

The previous prime is 667210550057. The next prime is 667210550099. The reversal of 667210550087 is 780055012766.

667210550087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667210550087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667210550057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333605275043 + 333605275044.

It is an arithmetic number, because the mean of its divisors is an integer number (333605275044).

Almost surely, 2^667210550087 is an apocalyptic number.

667210550087 is a deficient number, since it is larger than the sum of its proper divisors (1).

667210550087 is an equidigital number, since it uses as much as digits as its factorization.

667210550087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 667210550087 in words is "six hundred sixty-seven billion, two hundred ten million, five hundred fifty thousand, eighty-seven".