1032320565 has 64 divisors (see below), whose sum is σ = 1891169280. Its totient is φ = 533977920.

The previous prime is 1032320561. The next prime is 1032320567. The reversal of 1032320565 is 5650232301.

It is not a de Polignac number, because 1032320565 - 2² = 1032320561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032320561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 945670 + ... + 946760.

It is an arithmetic number, because the mean of its divisors is an integer number (29549520).

Almost surely, 2^1032320565 is an apocalyptic number.

1032320565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1032320565 is a deficient number, since it is larger than the sum of its proper divisors (858848715).

1032320565 is a wasteful number, since it uses less digits than its factorization.

1032320565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1032320565 is about 32129.7457973137. The cubic root of 1032320565 is about 1010.6594931450.

Adding to 1032320565 its reverse (5650232301), we get a palindrome (6682552866).

The spelling of 1032320565 in words is "one billion, thirty-two million, three hundred twenty thousand, five hundred sixty-five".