76985563 has 2 divisors, whose sum is σ = 76985564. Its totient is φ = 76985562.

The previous prime is 76985539. The next prime is 76985569. The reversal of 76985563 is 36558967.

It is a strong prime.

It is an emirp because it is prime and its reverse (36558967) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76985563 is a prime.

It is not a weakly prime, because it can be changed into another prime (76985569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38492781 + 38492782.

It is an arithmetic number, because the mean of its divisors is an integer number (38492782).

Almost surely, 2^76985563 is an apocalyptic number.

76985563 is a deficient number, since it is larger than the sum of its proper divisors (1).

76985563 is an equidigital number, since it uses as much as digits as its factorization.

76985563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 49.

The square root of 76985563 is about 8774.1417244081. The cubic root of 76985563 is about 425.4054962650.

The spelling of 76985563 in words is "seventy-six million, nine hundred eighty-five thousand, five hundred sixty-three".