1172556966 has 24 divisors (see below), whose sum is σ = 2727990360. Its totient is φ = 335016192.

The previous prime is 1172556953. The next prime is 1172556967. The reversal of 1172556966 is 6696552711.

1172556966 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172556967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1993851 + ... + 1994438.

It is an arithmetic number, because the mean of its divisors is an integer number (113666265).

Almost surely, 2^1172556966 is an apocalyptic number.

1172556966 is an abundant number, since it is smaller than the sum of its proper divisors (1555433394).

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

1172556966 is a wasteful number, since it uses less digits than its factorization.

1172556966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988308 (or 3988301 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 1172556966 is about 34242.6191463212. The cubic root of 1172556966 is about 1054.4953048220.

The spelling of 1172556966 in words is "one billion, one hundred seventy-two million, five hundred fifty-six thousand, nine hundred sixty-six".