67971523 has 2 divisors, whose sum is σ = 67971524. Its totient is φ = 67971522.

The previous prime is 67971517. The next prime is 67971529. The reversal of 67971523 is 32517976.

It is a balanced prime because it is at equal distance from previous prime (67971517) and next prime (67971529).

It is a cyclic number.

It is not a de Polignac number, because 67971523 - 2⁹ = 67971011 is a prime.

It is not a weakly prime, because it can be changed into another prime (67971529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33985761 + 33985762.

It is an arithmetic number, because the mean of its divisors is an integer number (33985762).

Almost surely, 2^67971523 is an apocalyptic number.

67971523 is a deficient number, since it is larger than the sum of its proper divisors (1).

67971523 is an equidigital number, since it uses as much as digits as its factorization.

67971523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 67971523 is about 8244.4843986753. The cubic root of 67971523 is about 408.1085251322.

The spelling of 67971523 in words is "sixty-seven million, nine hundred seventy-one thousand, five hundred twenty-three".