1059440661 has 16 divisors (see below), whose sum is σ = 1571286400. Its totient is φ = 705508704.

The previous prime is 1059440659. The next prime is 1059440671. The reversal of 1059440661 is 1660449501.

1059440661 is a `hidden beast` number, since 1 + 0 + 594 + 4 + 0 + 6 + 61 = 666.

1059440661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1059440661 - 2¹ = 1059440659 is a prime.

It is a super-2 number, since 2×1059440661² = 2244829028360233842, 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 (1059440671) 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, 3465 + ... + 46161.

It is an arithmetic number, because the mean of its divisors is an integer number (98205400).

Almost surely, 2^1059440661 is an apocalyptic number.

It is an amenable number.

1059440661 is a deficient number, since it is larger than the sum of its proper divisors (511845739).

1059440661 is an equidigital number, since it uses as much as digits as its factorization.

1059440661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43625 (or 43619 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1059440661 is about 32549.0500783049. The cubic root of 1059440661 is about 1019.4334483470.

The spelling of 1059440661 in words is "one billion, fifty-nine million, four hundred forty thousand, six hundred sixty-one".