68816471 has 2 divisors, whose sum is σ = 68816472. Its totient is φ = 68816470.

The previous prime is 68816441. The next prime is 68816513. The reversal of 68816471 is 17461886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68816471 - 2¹⁸ = 68554327 is a prime.

It is a super-3 number, since 3×68816471³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68816401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34408235 + 34408236.

It is an arithmetic number, because the mean of its divisors is an integer number (34408236).

Almost surely, 2^68816471 is an apocalyptic number.

68816471 is a deficient number, since it is larger than the sum of its proper divisors (1).

68816471 is an equidigital number, since it uses as much as digits as its factorization.

68816471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 68816471 is about 8295.5693596040. The cubic root of 68816471 is about 409.7926196923.

The spelling of 68816471 in words is "sixty-eight million, eight hundred sixteen thousand, four hundred seventy-one".