77763563 has 2 divisors, whose sum is σ = 77763564. Its totient is φ = 77763562.

The previous prime is 77763541. The next prime is 77763601. The reversal of 77763563 is 36536777.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36536777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77763563 - 2¹² = 77759467 is a prime.

It is not a weakly prime, because it can be changed into another prime (77763863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38881781 + 38881782.

It is an arithmetic number, because the mean of its divisors is an integer number (38881782).

Almost surely, 2^77763563 is an apocalyptic number.

77763563 is a deficient number, since it is larger than the sum of its proper divisors (1).

77763563 is an equidigital number, since it uses as much as digits as its factorization.

77763563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 555660, while the sum is 44.

The square root of 77763563 is about 8818.3650979079. The cubic root of 77763563 is about 426.8337155806.

The spelling of 77763563 in words is "seventy-seven million, seven hundred sixty-three thousand, five hundred sixty-three".