1166655056 has 80 divisors (see below), whose sum is σ = 2793678336. Its totient is φ = 460535808.

The previous prime is 1166655047. The next prime is 1166655071. The reversal of 1166655056 is 6505566611.

It is a super-2 number, since 2×1166655056² = 2722168039380726272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82970 + ... + 96006.

Almost surely, 2^1166655056 is an apocalyptic number.

1166655056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166655056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396839168).

1166655056 is an abundant number, since it is smaller than the sum of its proper divisors (1627023280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166655056 is a wasteful number, since it uses less digits than its factorization.

1166655056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13116 (or 13110 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 1166655056 is about 34156.3325900191. The cubic root of 1166655056 is about 1052.7231073528.

The spelling of 1166655056 in words is "one billion, one hundred sixty-six million, six hundred fifty-five thousand, fifty-six".