78593563 has 2 divisors, whose sum is σ = 78593564. Its totient is φ = 78593562.

The previous prime is 78593539. The next prime is 78593573. The reversal of 78593563 is 36539587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78593563 - 2⁵ = 78593531 is a prime.

It is not a weakly prime, because it can be changed into another prime (78593573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39296781 + 39296782.

It is an arithmetic number, because the mean of its divisors is an integer number (39296782).

Almost surely, 2^78593563 is an apocalyptic number.

78593563 is a deficient number, since it is larger than the sum of its proper divisors (1).

78593563 is an equidigital number, since it uses as much as digits as its factorization.

78593563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 78593563 is about 8865.3010665177. The cubic root of 78593563 is about 428.3469306179.

The spelling of 78593563 in words is "seventy-eight million, five hundred ninety-three thousand, five hundred sixty-three".