68444671 has 2 divisors, whose sum is σ = 68444672. Its totient is φ = 68444670.

The previous prime is 68444647. The next prime is 68444681. The reversal of 68444671 is 17644486.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68444671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68444681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34222335 + 34222336.

It is an arithmetic number, because the mean of its divisors is an integer number (34222336).

Almost surely, 2^68444671 is an apocalyptic number.

68444671 is a deficient number, since it is larger than the sum of its proper divisors (1).

68444671 is an equidigital number, since it uses as much as digits as its factorization.

68444671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 40.

The square root of 68444671 is about 8273.1294562578. The cubic root of 68444671 is about 409.0532806408.

The spelling of 68444671 in words is "sixty-eight million, four hundred forty-four thousand, six hundred seventy-one".