71480779 has 2 divisors, whose sum is σ = 71480780. Its totient is φ = 71480778.

The previous prime is 71480743. The next prime is 71480789. The reversal of 71480779 is 97708417.

It is a strong prime.

It is an emirp because it is prime and its reverse (97708417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71480779 - 2¹¹ = 71478731 is a prime.

It is not a weakly prime, because it can be changed into another prime (71480719) 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, 35740389 + 35740390.

It is an arithmetic number, because the mean of its divisors is an integer number (35740390).

Almost surely, 2^71480779 is an apocalyptic number.

71480779 is a deficient number, since it is larger than the sum of its proper divisors (1).

71480779 is an equidigital number, since it uses as much as digits as its factorization.

71480779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 71480779 is about 8454.6306246932. The cubic root of 71480779 is about 415.0143295967.

The spelling of 71480779 in words is "seventy-one million, four hundred eighty thousand, seven hundred seventy-nine".