667963 has 2 divisors, whose sum is σ = 667964. Its totient is φ = 667962.

The previous prime is 667949. The next prime is 667987. The reversal of 667963 is 369766.

667963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667963 - 2¹⁷ = 536891 is a prime.

It is not a weakly prime, because it can be changed into another prime (667903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333981 + 333982.

It is an arithmetic number, because the mean of its divisors is an integer number (333982).

2⁶⁶⁷⁹⁶³ is an apocalyptic number.

667963 is a deficient number, since it is larger than the sum of its proper divisors (1).

667963 is an equidigital number, since it uses as much as digits as its factorization.

667963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 37.

The square root of 667963 is about 817.2900341984. The cubic root of 667963 is about 87.4146323862.

The spelling of 667963 in words is "six hundred sixty-seven thousand, nine hundred sixty-three".