612718871 has 2 divisors, whose sum is σ = 612718872. Its totient is φ = 612718870.

The previous prime is 612718867. The next prime is 612718877. The reversal of 612718871 is 178817216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612718871 - 2² = 612718867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612718877) 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, 306359435 + 306359436.

It is an arithmetic number, because the mean of its divisors is an integer number (306359436).

Almost surely, 2^612718871 is an apocalyptic number.

612718871 is a deficient number, since it is larger than the sum of its proper divisors (1).

612718871 is an equidigital number, since it uses as much as digits as its factorization.

612718871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 41.

The square root of 612718871 is about 24753.1588085238. The cubic root of 612718871 is about 849.3507711435.

The spelling of 612718871 in words is "six hundred twelve million, seven hundred eighteen thousand, eight hundred seventy-one".