67996471 has 2 divisors, whose sum is σ = 67996472. Its totient is φ = 67996470.

The previous prime is 67996429. The next prime is 67996483. The reversal of 67996471 is 17469976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67996471 - 2²¹ = 65899319 is a prime.

It is a super-3 number, since 3×67996471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67996871) 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, 33998235 + 33998236.

It is an arithmetic number, because the mean of its divisors is an integer number (33998236).

Almost surely, 2^67996471 is an apocalyptic number.

67996471 is a deficient number, since it is larger than the sum of its proper divisors (1).

67996471 is an equidigital number, since it uses as much as digits as its factorization.

67996471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 67996471 is about 8245.9972714039. The cubic root of 67996471 is about 408.1584492064.

The spelling of 67996471 in words is "sixty-seven million, nine hundred ninety-six thousand, four hundred seventy-one".