6480385 has 4 divisors (see below), whose sum is σ = 7776468. Its totient is φ = 5184304.

The previous prime is 6480373. The next prime is 6480389. The reversal of 6480385 is 5830846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 986049 + 5494336 = 993^2 + 2344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6480385 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6480385.

It is not an unprimeable number, because it can be changed into a prime (6480389) 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, 648034 + ... + 648043.

It is an arithmetic number, because the mean of its divisors is an integer number (1944117).

Almost surely, 2^6480385 is an apocalyptic number.

It is an amenable number.

6480385 is a deficient number, since it is larger than the sum of its proper divisors (1296083).

6480385 is a wasteful number, since it uses less digits than its factorization.

6480385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296082.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 6480385 is about 2545.6600322903. The cubic root of 6480385 is about 186.4376425203.

The spelling of 6480385 in words is "six million, four hundred eighty thousand, three hundred eighty-five".