780563 has 4 divisors (see below), whose sum is σ = 892080. Its totient is φ = 669048.

The previous prime is 780553. The next prime is 780583. The reversal of 780563 is 365087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365087 = 31 ⋅11777.

It is a cyclic number.

It is not a de Polignac number, because 780563 - 2⁶ = 780499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (780523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55748 + ... + 55761.

It is an arithmetic number, because the mean of its divisors is an integer number (223020).

2⁷⁸⁰⁵⁶³ is an apocalyptic number.

780563 is a deficient number, since it is larger than the sum of its proper divisors (111517).

780563 is a wasteful number, since it uses less digits than its factorization.

780563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111516.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 780563 is about 883.4947651231. The cubic root of 780563 is about 92.0737829661.

The spelling of 780563 in words is "seven hundred eighty thousand, five hundred sixty-three".