667170743 has 2 divisors, whose sum is σ = 667170744. Its totient is φ = 667170742.

The previous prime is 667170733. The next prime is 667170799. The reversal of 667170743 is 347071766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667170743 - 2⁴ = 667170727 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667170743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667170733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333585371 + 333585372.

It is an arithmetic number, because the mean of its divisors is an integer number (333585372).

Almost surely, 2^667170743 is an apocalyptic number.

667170743 is a deficient number, since it is larger than the sum of its proper divisors (1).

667170743 is an equidigital number, since it uses as much as digits as its factorization.

667170743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 667170743 is about 25829.6485264511. The cubic root of 667170743 is about 873.8005848857.

The spelling of 667170743 in words is "six hundred sixty-seven million, one hundred seventy thousand, seven hundred forty-three".