581141663 has 2 divisors, whose sum is σ = 581141664. Its totient is φ = 581141662.

The previous prime is 581141653. The next prime is 581141677. The reversal of 581141663 is 366141185.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 581141663 - 2⁶ = 581141599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (581141653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290570831 + 290570832.

It is an arithmetic number, because the mean of its divisors is an integer number (290570832).

Almost surely, 2^581141663 is an apocalyptic number.

581141663 is a deficient number, since it is larger than the sum of its proper divisors (1).

581141663 is an equidigital number, since it uses as much as digits as its factorization.

581141663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 581141663 is about 24106.8799930642. The cubic root of 581141663 is about 834.5019143317.

It can be divided in two parts, 5811 and 41663, that added together give a palindrome (47474).

The spelling of 581141663 in words is "five hundred eighty-one million, one hundred forty-one thousand, six hundred sixty-three".