67745071 has 2 divisors, whose sum is σ = 67745072. Its totient is φ = 67745070.

The previous prime is 67745063. The next prime is 67745087. The reversal of 67745071 is 17054776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67745071 - 2³ = 67745063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67745071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67745021) 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, 33872535 + 33872536.

It is an arithmetic number, because the mean of its divisors is an integer number (33872536).

Almost surely, 2^67745071 is an apocalyptic number.

67745071 is a deficient number, since it is larger than the sum of its proper divisors (1).

67745071 is an equidigital number, since it uses as much as digits as its factorization.

67745071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 67745071 is about 8230.7393957044. The cubic root of 67745071 is about 407.6548066272.

The spelling of 67745071 in words is "sixty-seven million, seven hundred forty-five thousand, seventy-one".