1156610066 has 12 divisors (see below), whose sum is σ = 1831033422. Its totient is φ = 547867584.

The previous prime is 1156610053. The next prime is 1156610069. The reversal of 1156610066 is 6600166511.

It can be written as a sum of positive squares in only one way, i.e., 712623025 + 443987041 = 26695^2 + 21071^2 .

It is not an unprimeable number, because it can be changed into a prime (1156610069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 800255 + ... + 801698.

Almost surely, 2^1156610066 is an apocalyptic number.

1156610066 is a deficient number, since it is larger than the sum of its proper divisors (674423356).

1156610066 is a wasteful number, since it uses less digits than its factorization.

1156610066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601993 (or 1601974 counting only the distinct ones).

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

The square root of 1156610066 is about 34008.9703754759. The cubic root of 1156610066 is about 1049.6930519259.

Adding to 1156610066 its reverse (6600166511), we get a palindrome (7756776577).

The spelling of 1156610066 in words is "one billion, one hundred fifty-six million, six hundred ten thousand, sixty-six".