1064562221 has 4 divisors (see below), whose sum is σ = 1067578332. Its totient is φ = 1061546112.

The previous prime is 1064562217. The next prime is 1064562259. The reversal of 1064562221 is 1222654601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141253225 + 923308996 = 11885^2 + 30386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1064562221 - 2² = 1064562217 is a prime.

It is a super-2 number, since 2×1064562221² = 2266585444760905682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064562211) 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, 1507526 + ... + 1508231.

It is an arithmetic number, because the mean of its divisors is an integer number (266894583).

Almost surely, 2^1064562221 is an apocalyptic number.

It is an amenable number.

1064562221 is a deficient number, since it is larger than the sum of its proper divisors (3016111).

1064562221 is an equidigital number, since it uses as much as digits as its factorization.

1064562221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016110.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1064562221 is about 32627.6297177714. The cubic root of 1064562221 is about 1021.0735272437.

The spelling of 1064562221 in words is "one billion, sixty-four million, five hundred sixty-two thousand, two hundred twenty-one".