660624067 has 2 divisors, whose sum is σ = 660624068. Its totient is φ = 660624066.

The previous prime is 660624037. The next prime is 660624077. The reversal of 660624067 is 760426066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660624067 - 2¹¹ = 660622019 is a prime.

It is not a weakly prime, because it can be changed into another prime (660624037) 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, 330312033 + 330312034.

It is an arithmetic number, because the mean of its divisors is an integer number (330312034).

Almost surely, 2^660624067 is an apocalyptic number.

660624067 is a deficient number, since it is larger than the sum of its proper divisors (1).

660624067 is an equidigital number, since it uses as much as digits as its factorization.

660624067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 660624067 is about 25702.6081750471. The cubic root of 660624067 is about 870.9331015619.

The spelling of 660624067 in words is "six hundred sixty million, six hundred twenty-four thousand, sixty-seven".