1177668856 has 64 divisors (see below), whose sum is σ = 2791212480. Its totient is φ = 453288960.

The previous prime is 1177668853. The next prime is 1177668881. The reversal of 1177668856 is 6588667711.

It is a junction number, because it is equal to n+sod(n) for n = 1177668797 and 1177668806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177668853) 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, 5076 + ... + 48796.

It is an arithmetic number, because the mean of its divisors is an integer number (43612695).

Almost surely, 2^1177668856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1177668856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395606240).

1177668856 is an abundant number, since it is smaller than the sum of its proper divisors (1613543624).

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

1177668856 is a wasteful number, since it uses less digits than its factorization.

1177668856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43784 (or 43780 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The square root of 1177668856 is about 34317.1801871890. The cubic root of 1177668856 is about 1056.0254790876.

The spelling of 1177668856 in words is "one billion, one hundred seventy-seven million, six hundred sixty-eight thousand, eight hundred fifty-six".