1180655 has 24 divisors (see below), whose sum is σ = 1696320. Its totient is φ = 786240.

The previous prime is 1180643. The next prime is 1180657. The reversal of 1180655 is 5560811.

It is not a de Polignac number, because 1180655 - 2⁶ = 1180591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14906 + ... + 14984.

It is an arithmetic number, because the mean of its divisors is an integer number (70680).

2^1180655 is an apocalyptic number.

1180655 is a deficient number, since it is larger than the sum of its proper divisors (515665).

1180655 is an equidigital number, since it uses as much as digits as its factorization.

1180655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1180655 is about 1086.5794954811. The cubic root of 1180655 is about 105.6917292477.

The spelling of 1180655 in words is "one million, one hundred eighty thousand, six hundred fifty-five".