667053173 has 2 divisors, whose sum is σ = 667053174. Its totient is φ = 667053172.

The previous prime is 667053151. The next prime is 667053193. The reversal of 667053173 is 371350766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658332964 + 8720209 = 25658^2 + 2953^2 .

It is a cyclic number.

It is not a de Polignac number, because 667053173 - 2¹⁰ = 667052149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667053113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333526586 + 333526587.

It is an arithmetic number, because the mean of its divisors is an integer number (333526587).

Almost surely, 2^667053173 is an apocalyptic number.

It is an amenable number.

667053173 is a deficient number, since it is larger than the sum of its proper divisors (1).

667053173 is an equidigital number, since it uses as much as digits as its factorization.

667053173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 667053173 is about 25827.3725531654. The cubic root of 667053173 is about 873.7492543125.

The spelling of 667053173 in words is "six hundred sixty-seven million, fifty-three thousand, one hundred seventy-three".