1005663361 has 4 divisors (see below), whose sum is σ = 1015062192. Its totient is φ = 996264532.

The previous prime is 1005663341. The next prime is 1005663389. The reversal of 1005663361 is 1633665001.

1005663361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1005663361 - 2²¹ = 1003566209 is a prime.

It is a super-2 number, since 2×1005663361² = 2022717591315632642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005663301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4699255 + ... + 4699468.

It is an arithmetic number, because the mean of its divisors is an integer number (253765548).

Almost surely, 2^1005663361 is an apocalyptic number.

It is an amenable number.

1005663361 is a deficient number, since it is larger than the sum of its proper divisors (9398831).

1005663361 is an equidigital number, since it uses as much as digits as its factorization.

1005663361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9398830.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1005663361 is about 31712.1957770193. The cubic root of 1005663361 is about 1001.8842344307.

The spelling of 1005663361 in words is "one billion, five million, six hundred sixty-three thousand, three hundred sixty-one".