667087780763 has 2 divisors, whose sum is σ = 667087780764. Its totient is φ = 667087780762.

The previous prime is 667087780741. The next prime is 667087780769. The reversal of 667087780763 is 367087780766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667087780763 - 2⁶ = 667087780699 is a prime.

It is a super-2 number, since 2×667087780763² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667087780763.

It is not a weakly prime, because it can be changed into another prime (667087780769) 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, 333543890381 + 333543890382.

It is an arithmetic number, because the mean of its divisors is an integer number (333543890382).

Almost surely, 2^667087780763 is an apocalyptic number.

667087780763 is a deficient number, since it is larger than the sum of its proper divisors (1).

667087780763 is an equidigital number, since it uses as much as digits as its factorization.

667087780763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99574272, while the sum is 65.

The spelling of 667087780763 in words is "six hundred sixty-seven billion, eighty-seven million, seven hundred eighty thousand, seven hundred sixty-three".