71768929 has 2 divisors, whose sum is σ = 71768930. Its totient is φ = 71768928.

The previous prime is 71768927. The next prime is 71768987. The reversal of 71768929 is 92986717.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57153600 + 14615329 = 7560^2 + 3823^2 .

It is a cyclic number.

It is not a de Polignac number, because 71768929 - 2¹ = 71768927 is a prime.

Together with 71768927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71768923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35884464 + 35884465.

It is an arithmetic number, because the mean of its divisors is an integer number (35884465).

Almost surely, 2^71768929 is an apocalyptic number.

It is an amenable number.

71768929 is a deficient number, since it is larger than the sum of its proper divisors (1).

71768929 is an equidigital number, since it uses as much as digits as its factorization.

71768929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 71768929 is about 8471.6544429055. The cubic root of 71768929 is about 415.5712441001.

The spelling of 71768929 in words is "seventy-one million, seven hundred sixty-eight thousand, nine hundred twenty-nine".