1161065606 has 4 divisors (see below), whose sum is σ = 1741598412. Its totient is φ = 580532802.

The previous prime is 1161065603. The next prime is 1161065611. The reversal of 1161065606 is 6065601611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6065601611 = 2927 ⋅2072293.

It is a super-2 number, since 2×1161065606² = 2696146682872294472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161065603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290266400 + ... + 290266403.

It is an arithmetic number, because the mean of its divisors is an integer number (435399603).

Almost surely, 2^1161065606 is an apocalyptic number.

1161065606 is a deficient number, since it is larger than the sum of its proper divisors (580532806).

1161065606 is an equidigital number, since it uses as much as digits as its factorization.

1161065606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580532805.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1161065606 is about 34074.4127755711. The cubic root of 1161065606 is about 1051.0392148089.

The spelling of 1161065606 in words is "one billion, one hundred sixty-one million, sixty-five thousand, six hundred six".