1180665 has 12 divisors (see below), whose sum is σ = 2046564. Its totient is φ = 629664.

The previous prime is 1180661. The next prime is 1180691. The reversal of 1180665 is 5660811.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 898704 = 531^2 + 948^2 .

It is not a de Polignac number, because 1180665 - 2² = 1180661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1180661) 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, 13074 + ... + 13163.

It is an arithmetic number, because the mean of its divisors is an integer number (170547).

2^1180665 is an apocalyptic number.

1180665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1180665 is a deficient number, since it is larger than the sum of its proper divisors (865899).

1180665 is a wasteful number, since it uses less digits than its factorization.

1180665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26248 (or 26245 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1180665 is about 1086.5840970675. The cubic root of 1180665 is about 105.6920276455.

The spelling of 1180665 in words is "one million, one hundred eighty thousand, six hundred sixty-five".