660734167 has 2 divisors, whose sum is σ = 660734168. Its totient is φ = 660734166.

The previous prime is 660734159. The next prime is 660734203. The reversal of 660734167 is 761437066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660734167 - 2³ = 660734159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660734267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330367083 + 330367084.

It is an arithmetic number, because the mean of its divisors is an integer number (330367084).

Almost surely, 2^660734167 is an apocalyptic number.

660734167 is a deficient number, since it is larger than the sum of its proper divisors (1).

660734167 is an equidigital number, since it uses as much as digits as its factorization.

660734167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 660734167 is about 25704.7498918002. The cubic root of 660734167 is about 870.9814822839.

The spelling of 660734167 in words is "six hundred sixty million, seven hundred thirty-four thousand, one hundred sixty-seven".