1023065 has 4 divisors (see below), whose sum is σ = 1227684. Its totient is φ = 818448.

The previous prime is 1023047. The next prime is 1023067. The reversal of 1023065 is 5603201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5603201 = 43 ⋅130307.

It can be written as a sum of positive squares in 2 ways, for example, as 582169 + 440896 = 763^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023065 - 2¹⁶ = 957529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102302 + ... + 102311.

It is an arithmetic number, because the mean of its divisors is an integer number (306921).

2^1023065 is an apocalyptic number.

It is an amenable number.

1023065 is a deficient number, since it is larger than the sum of its proper divisors (204619).

1023065 is an equidigital number, since it uses as much as digits as its factorization.

1023065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204618.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 1023065 is about 1011.4667567449. The cubic root of 1023065 is about 100.7629968846.

Adding to 1023065 its reverse (5603201), we get a palindrome (6626266).

The spelling of 1023065 in words is "one million, twenty-three thousand, sixty-five".