1005061566 has 16 divisors (see below), whose sum is σ = 2014665984. Its totient is φ = 334263384.

The previous prime is 1005061549. The next prime is 1005061579. The reversal of 1005061566 is 6651605001.

It is a congruent number.

It is an unprimeable number.

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, 186406 + ... + 191721.

It is an arithmetic number, because the mean of its divisors is an integer number (125916624).

Almost surely, 2^1005061566 is an apocalyptic number.

1005061566 is an abundant number, since it is smaller than the sum of its proper divisors (1009604418).

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

1005061566 is a wasteful number, since it uses less digits than its factorization.

1005061566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378575.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1005061566 is about 31702.7059728346. The cubic root of 1005061566 is about 1001.6843500388.

Adding to 1005061566 its reverse (6651605001), we get a palindrome (7656666567).

The spelling of 1005061566 in words is "one billion, five million, sixty-one thousand, five hundred sixty-six".