667516463 has 2 divisors, whose sum is σ = 667516464. Its totient is φ = 667516462.

The previous prime is 667516411. The next prime is 667516469. The reversal of 667516463 is 364615766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667516463 - 2⁸ = 667516207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667516469) 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 as a sum of consecutive naturals, namely, 333758231 + 333758232.

It is an arithmetic number, because the mean of its divisors is an integer number (333758232).

Almost surely, 2^667516463 is an apocalyptic number.

667516463 is a deficient number, since it is larger than the sum of its proper divisors (1).

667516463 is an equidigital number, since it uses as much as digits as its factorization.

667516463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 667516463 is about 25836.3399691210. The cubic root of 667516463 is about 873.9514898709.

The spelling of 667516463 in words is "six hundred sixty-seven million, five hundred sixteen thousand, four hundred sixty-three".