490586561 has 8 divisors (see below), whose sum is σ = 519828264. Its totient is φ = 461387520.

The previous prime is 490586557. The next prime is 490586587. The reversal of 490586561 is 165685094.

It can be written as a sum of positive squares in 4 ways, for example, as 119793025 + 370793536 = 10945^2 + 19256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490586561 - 2² = 490586557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490586861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14771 + ... + 34631.

It is an arithmetic number, because the mean of its divisors is an integer number (64978533).

Almost surely, 2^490586561 is an apocalyptic number.

It is an amenable number.

490586561 is a deficient number, since it is larger than the sum of its proper divisors (29241703).

490586561 is a wasteful number, since it uses less digits than its factorization.

490586561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21331.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 490586561 is about 22149.1887210345. The cubic root of 490586561 is about 788.6879685294.

The spelling of 490586561 in words is "four hundred ninety million, five hundred eighty-six thousand, five hundred sixty-one".