681832563 has 16 divisors (see below), whose sum is σ = 928753056. Its totient is φ = 444810240.

The previous prime is 681832531. The next prime is 681832573. The reversal of 681832563 is 365238186.

681832563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 681832563 - 2⁵ = 681832531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (681832513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26595 + ... + 45507.

It is an arithmetic number, because the mean of its divisors is an integer number (58047066).

Almost surely, 2^681832563 is an apocalyptic number.

681832563 is a deficient number, since it is larger than the sum of its proper divisors (246920493).

681832563 is a wasteful number, since it uses less digits than its factorization.

681832563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19174.

The product of its digits is 207360, while the sum is 42.

The square root of 681832563 is about 26111.9237705689. The cubic root of 681832563 is about 880.1551736519.

The spelling of 681832563 in words is "six hundred eighty-one million, eight hundred thirty-two thousand, five hundred sixty-three".