660522167 has 2 divisors, whose sum is σ = 660522168. Its totient is φ = 660522166.

The previous prime is 660522151. The next prime is 660522263. The reversal of 660522167 is 761225066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660522167 - 2⁴ = 660522151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660522767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330261083 + 330261084.

It is an arithmetic number, because the mean of its divisors is an integer number (330261084).

Almost surely, 2^660522167 is an apocalyptic number.

660522167 is a deficient number, since it is larger than the sum of its proper divisors (1).

660522167 is an equidigital number, since it uses as much as digits as its factorization.

660522167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 660522167 is about 25700.6258095012. The cubic root of 660522167 is about 870.8883193371. Note that the first 3 decimals are identical.

The spelling of 660522167 in words is "six hundred sixty million, five hundred twenty-two thousand, one hundred sixty-seven".