1350665 has 4 divisors (see below), whose sum is σ = 1620804. Its totient is φ = 1080528.

The previous prime is 1350647. The next prime is 1350677. The reversal of 1350665 is 5660531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 1054729 = 544^2 + 1027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350665 - 2¹⁶ = 1285129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135062 + ... + 135071.

It is an arithmetic number, because the mean of its divisors is an integer number (405201).

2^1350665 is an apocalyptic number.

It is an amenable number.

1350665 is a deficient number, since it is larger than the sum of its proper divisors (270139).

1350665 is an equidigital number, since it uses as much as digits as its factorization.

1350665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270138.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1350665 is about 1162.1811390657. The cubic root of 1350665 is about 110.5390892466.

The spelling of 1350665 in words is "one million, three hundred fifty thousand, six hundred sixty-five".