1170665 has 8 divisors (see below), whose sum is σ = 1415880. Its totient is φ = 929152.

The previous prime is 1170661. The next prime is 1170667. The reversal of 1170665 is 5660711.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 1125721 = 212^2 + 1061^2 .

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 1170665 - 2² = 1170661 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1170661) 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, 170 + ... + 1539.

It is an arithmetic number, because the mean of its divisors is an integer number (176985).

2^1170665 is an apocalyptic number.

It is an amenable number.

1170665 is a deficient number, since it is larger than the sum of its proper divisors (245215).

1170665 is a wasteful number, since it uses less digits than its factorization.

1170665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1170665 is about 1081.9727353312. The cubic root of 1170665 is about 105.3927843190.

The spelling of 1170665 in words is "one million, one hundred seventy thousand, six hundred sixty-five".