612505163 has 2 divisors, whose sum is σ = 612505164. Its totient is φ = 612505162.

The previous prime is 612505151. The next prime is 612505169. The reversal of 612505163 is 361505216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612505163 is a prime.

It is not a weakly prime, because it can be changed into another prime (612505169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306252581 + 306252582.

It is an arithmetic number, because the mean of its divisors is an integer number (306252582).

Almost surely, 2^612505163 is an apocalyptic number.

612505163 is a deficient number, since it is larger than the sum of its proper divisors (1).

612505163 is an equidigital number, since it uses as much as digits as its factorization.

612505163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 612505163 is about 24748.8416496611. The cubic root of 612505163 is about 849.2520123323.

The spelling of 612505163 in words is "six hundred twelve million, five hundred five thousand, one hundred sixty-three".