1005064563 has 4 divisors (see below), whose sum is σ = 1340086088. Its totient is φ = 670043040.

The previous prime is 1005064561. The next prime is 1005064631. The reversal of 1005064563 is 3654605001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3654605001 = 3 ⋅1218201667.

It is not a de Polignac number, because 1005064563 - 2¹ = 1005064561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1005064563.

It is not an unprimeable number, because it can be changed into a prime (1005064561) 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, 167510758 + ... + 167510763.

It is an arithmetic number, because the mean of its divisors is an integer number (335021522).

Almost surely, 2^1005064563 is an apocalyptic number.

1005064563 is a deficient number, since it is larger than the sum of its proper divisors (335021525).

1005064563 is an equidigital number, since it uses as much as digits as its factorization.

1005064563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335021524.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1005064563 is about 31702.7532400579. The cubic root of 1005064563 is about 1001.6853456809.

Adding to 1005064563 its reverse (3654605001), we get a palindrome (4659669564).

The spelling of 1005064563 in words is "one billion, five million, sixty-four thousand, five hundred sixty-three".