1177985 has 8 divisors (see below), whose sum is σ = 1446720. Its totient is φ = 920304.

The previous prime is 1177949. The next prime is 1177987. The reversal of 1177985 is 5897711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1177985 - 2⁶ = 1177921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1177987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525 + ... + 2954.

It is an arithmetic number, because the mean of its divisors is an integer number (180840).

2^1177985 is an apocalyptic number.

It is an amenable number.

1177985 is a deficient number, since it is larger than the sum of its proper divisors (268735).

1177985 is an equidigital number, since it uses as much as digits as its factorization.

1177985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527.

The product of its digits is 17640, while the sum is 38.

The square root of 1177985 is about 1085.3501739070. The cubic root of 1177985 is about 105.6119966953.

The spelling of 1177985 in words is "one million, one hundred seventy-seven thousand, nine hundred eighty-five".