491247568 has 40 divisors (see below), whose sum is σ = 1114303680. Its totient is φ = 205397760.

The previous prime is 491247563. The next prime is 491247571. The reversal of 491247568 is 865742194.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491247563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48898 + ... + 58081.

It is an arithmetic number, because the mean of its divisors is an integer number (27857592).

Almost surely, 2^491247568 is an apocalyptic number.

It is an amenable number.

491247568 is an abundant number, since it is smaller than the sum of its proper divisors (623056112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491247568 is a wasteful number, since it uses less digits than its factorization.

491247568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107035 (or 107029 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 491247568 is about 22164.1053958873. The cubic root of 491247568 is about 789.0420306134.

The spelling of 491247568 in words is "four hundred ninety-one million, two hundred forty-seven thousand, five hundred sixty-eight".