75680279 has 2 divisors, whose sum is σ = 75680280. Its totient is φ = 75680278.

The previous prime is 75680261. The next prime is 75680291. The reversal of 75680279 is 97208657.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75680279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75680299) 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, 37840139 + 37840140.

It is an arithmetic number, because the mean of its divisors is an integer number (37840140).

Almost surely, 2^75680279 is an apocalyptic number.

75680279 is a deficient number, since it is larger than the sum of its proper divisors (1).

75680279 is an equidigital number, since it uses as much as digits as its factorization.

75680279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 75680279 is about 8699.4413038999. The cubic root of 75680279 is about 422.9875403149.

The spelling of 75680279 in words is "seventy-five million, six hundred eighty thousand, two hundred seventy-nine".