1000521664 has 28 divisors (see below), whose sum is σ = 1996402408. Its totient is φ = 497491200.

The previous prime is 1000521661. The next prime is 1000521671. The reversal of 1000521664 is 4661250001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000521661) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31602 + ... + 54769.

It is an arithmetic number, because the mean of its divisors is an integer number (71300086).

Almost surely, 2^1000521664 is an apocalyptic number.

It is an amenable number.

1000521664 is a deficient number, since it is larger than the sum of its proper divisors (995880744).

1000521664 is an equidigital number, since it uses as much as digits as its factorization.

1000521664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86564 (or 86554 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1000521664 is about 31631.0237583294. The cubic root of 1000521664 is about 1000.1738577717.

Adding to 1000521664 its reverse (4661250001), we get a palindrome (5661771665).

The spelling of 1000521664 in words is "one billion, five hundred twenty-one thousand, six hundred sixty-four".