1177666560 has 352 divisors, whose sum is σ = 4787032320. Its totient is φ = 268959744.

The previous prime is 1177666489. The next prime is 1177666603. The reversal of 1177666560 is 656667711.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 967072 + ... + 968288.

Almost surely, 2^1177666560 is an apocalyptic number.

1177666560 is a gapful number since it is divisible by the number (10) 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 1177666560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2393516160).

1177666560 is an abundant number, since it is smaller than the sum of its proper divisors (3609365760).

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

1177666560 is a wasteful number, since it uses less digits than its factorization.

1177666560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1177666560 is about 34317.1467345407. The cubic root of 1177666560 is about 1056.0247928063.

The spelling of 1177666560 in words is "one billion, one hundred seventy-seven million, six hundred sixty-six thousand, five hundred sixty".