1073665 has 4 divisors (see below), whose sum is σ = 1288404. Its totient is φ = 858928.

The previous prime is 1073651. The next prime is 1073687. The reversal of 1073665 is 5663701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5663701 = 37 ⋅153073.

It can be written as a sum of positive squares in 2 ways, for example, as 128881 + 944784 = 359^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073665 - 2⁷ = 1073537 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107362 + ... + 107371.

It is an arithmetic number, because the mean of its divisors is an integer number (322101).

2^1073665 is an apocalyptic number.

It is an amenable number.

1073665 is a deficient number, since it is larger than the sum of its proper divisors (214739).

1073665 is an equidigital number, since it uses as much as digits as its factorization.

1073665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214738.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1073665 is about 1036.1780734990. The cubic root of 1073665 is about 102.3975577726.

It can be divided in two parts, 10736 and 65, that added together give a palindrome (10801).

The spelling of 1073665 in words is "one million, seventy-three thousand, six hundred sixty-five".