667304063 has 2 divisors, whose sum is σ = 667304064. Its totient is φ = 667304062.

The previous prime is 667304017. The next prime is 667304089. The reversal of 667304063 is 360403766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667304063 - 2¹⁸ = 667041919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667304093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333652031 + 333652032.

It is an arithmetic number, because the mean of its divisors is an integer number (333652032).

Almost surely, 2^667304063 is an apocalyptic number.

667304063 is a deficient number, since it is larger than the sum of its proper divisors (1).

667304063 is an equidigital number, since it uses as much as digits as its factorization.

667304063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 667304063 is about 25832.2291527464. The cubic root of 667304063 is about 873.8587845477.

The spelling of 667304063 in words is "six hundred sixty-seven million, three hundred four thousand, sixty-three".