1064330521 has 16 divisors (see below), whose sum is σ = 1101936528. Its totient is φ = 1027353600.

The previous prime is 1064330513. The next prime is 1064330569. The reversal of 1064330521 is 1250334601.

It can be written as a sum of positive squares in 8 ways, for example, as 412090000 + 652240521 = 20300^2 + 25539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1064330521 - 2³ = 1064330513 is a prime.

It is a super-2 number, since 2×1064330521² = 2265598915864262882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1064330321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2527891 + ... + 2528311.

It is an arithmetic number, because the mean of its divisors is an integer number (68871033).

Almost surely, 2^1064330521 is an apocalyptic number.

It is an amenable number.

1064330521 is a deficient number, since it is larger than the sum of its proper divisors (37606007).

1064330521 is a wasteful number, since it uses less digits than its factorization.

1064330521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1064330521 is about 32624.0788528964. The cubic root of 1064330521 is about 1020.9994436133. Note that the first 3 decimals are identical.

The spelling of 1064330521 in words is "one billion, sixty-four million, three hundred thirty thousand, five hundred twenty-one".