1359665 has 8 divisors (see below), whose sum is σ = 1688040. Its totient is φ = 1050112.

The previous prime is 1359661. The next prime is 1359679. The reversal of 1359665 is 5669531.

It can be written as a sum of positive squares in 4 ways, for example, as 16384 + 1343281 = 128^2 + 1159^2 .

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 1359665 - 2² = 1359661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1359661) 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, 4544 + ... + 4833.

It is an arithmetic number, because the mean of its divisors is an integer number (211005).

2^1359665 is an apocalyptic number.

It is an amenable number.

1359665 is a deficient number, since it is larger than the sum of its proper divisors (328375).

1359665 is an equidigital number, since it uses as much as digits as its factorization.

1359665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9411.

The product of its digits is 24300, while the sum is 35.

The square root of 1359665 is about 1166.0467400580. The cubic root of 1359665 is about 110.7840674002.

The spelling of 1359665 in words is "one million, three hundred fifty-nine thousand, six hundred sixty-five".