78833563 has 2 divisors, whose sum is σ = 78833564. Its totient is φ = 78833562.

The previous prime is 78833561. The next prime is 78833567. The reversal of 78833563 is 36533887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78833563 - 2¹ = 78833561 is a prime.

Together with 78833561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (78833561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39416781 + 39416782.

It is an arithmetic number, because the mean of its divisors is an integer number (39416782).

Almost surely, 2^78833563 is an apocalyptic number.

78833563 is a deficient number, since it is larger than the sum of its proper divisors (1).

78833563 is an equidigital number, since it uses as much as digits as its factorization.

78833563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 78833563 is about 8878.8266679782. The cubic root of 78833563 is about 428.7824997818.

The spelling of 78833563 in words is "seventy-eight million, eight hundred thirty-three thousand, five hundred sixty-three".