1064551689 has 12 divisors (see below), whose sum is σ = 1539726916. Its totient is φ = 708759072.

The previous prime is 1064551673. The next prime is 1064551721. The reversal of 1064551689 is 9861554601.

1064551689 is a `hidden beast` number, since 10 + 6 + 4 + 551 + 6 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 210743289 + 853808400 = 14517^2 + 29220^2 .

It is not a de Polignac number, because 1064551689 - 2⁴ = 1064551673 is a prime.

It is a super-2 number, since 2×1064551689² = 2266540597105505442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1064551639) 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 11 ways as a sum of consecutive naturals, for example, 71314 + ... + 84939.

Almost surely, 2^1064551689 is an apocalyptic number.

It is an amenable number.

1064551689 is a deficient number, since it is larger than the sum of its proper divisors (475175227).

1064551689 is a wasteful number, since it uses less digits than its factorization.

1064551689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157016 (or 157013 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1064551689 is about 32627.4683204198. The cubic root of 1064551689 is about 1021.0701599810.

The spelling of 1064551689 in words is "one billion, sixty-four million, five hundred fifty-one thousand, six hundred eighty-nine".