67752109 has 2 divisors, whose sum is σ = 67752110. Its totient is φ = 67752108.

The previous prime is 67752053. The next prime is 67752121. The reversal of 67752109 is 90125776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65853225 + 1898884 = 8115^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 67752109 - 2⁹ = 67751597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67752199) 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, 33876054 + 33876055.

It is an arithmetic number, because the mean of its divisors is an integer number (33876055).

Almost surely, 2^67752109 is an apocalyptic number.

It is an amenable number.

67752109 is a deficient number, since it is larger than the sum of its proper divisors (1).

67752109 is an equidigital number, since it uses as much as digits as its factorization.

67752109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 67752109 is about 8231.1669282065. The cubic root of 67752109 is about 407.6689231533.

The spelling of 67752109 in words is "sixty-seven million, seven hundred fifty-two thousand, one hundred nine".