1063581 has 8 divisors (see below), whose sum is σ = 1452864. Its totient is φ = 691680.

The previous prime is 1063561. The next prime is 1063597. The reversal of 1063581 is 1853601.

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

It is not a de Polignac number, because 1063581 - 2⁷ = 1063453 is a prime.

It is a super-2 number, since 2×1063581² = 2262409087122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063501) 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, 4201 + ... + 4446.

It is an arithmetic number, because the mean of its divisors is an integer number (181608).

2^1063581 is an apocalyptic number.

It is an amenable number.

1063581 is a deficient number, since it is larger than the sum of its proper divisors (389283).

1063581 is an equidigital number, since it uses as much as digits as its factorization.

1063581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8691.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1063581 is about 1031.3006351205. The cubic root of 1063581 is about 102.0759718510.

The spelling of 1063581 in words is "one million, sixty-three thousand, five hundred eighty-one".