6450320 has 20 divisors (see below), whose sum is σ = 14997180. Its totient is φ = 2580096.

The previous prime is 6450319. The next prime is 6450331. The reversal of 6450320 is 230546.

It can be written as a sum of positive squares in 2 ways, for example, as 2930944 + 3519376 = 1712^2 + 1876^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 6450292 and 6450301.

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, 40235 + ... + 40394.

It is an arithmetic number, because the mean of its divisors is an integer number (749859).

Almost surely, 2^6450320 is an apocalyptic number.

It is an amenable number.

6450320 is an abundant number, since it is smaller than the sum of its proper divisors (8546860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6450320 is a wasteful number, since it uses less digits than its factorization.

6450320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80642 (or 80636 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6450320 is about 2539.7480189972. The cubic root of 6450320 is about 186.1488768356.

Adding to 6450320 its reverse (230546), we get a palindrome (6680866).

The spelling of 6450320 in words is "six million, four hundred fifty thousand, three hundred twenty".