4320765 has 12 divisors (see below), whose sum is σ = 7489404. Its totient is φ = 2304384.

The previous prime is 4320761. The next prime is 4320787. The reversal of 4320765 is 5670234.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 793881 + 3526884 = 891^2 + 1878^2 .

It is not a de Polignac number, because 4320765 - 2² = 4320761 is a prime.

4320765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47964 + ... + 48053.

It is an arithmetic number, because the mean of its divisors is an integer number (624117).

Almost surely, 2^4320765 is an apocalyptic number.

4320765 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4320765 is a deficient number, since it is larger than the sum of its proper divisors (3168639).

4320765 is a wasteful number, since it uses less digits than its factorization.

4320765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96028 (or 96025 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 4320765 is about 2078.6449913345. The cubic root of 4320765 is about 162.8746699907.

Adding to 4320765 its reverse (5670234), we get a palindrome (9990999).

The spelling of 4320765 in words is "four million, three hundred twenty thousand, seven hundred sixty-five".