6480730 has 8 divisors (see below), whose sum is σ = 11665332. Its totient is φ = 2592288.

The previous prime is 6480707. The next prime is 6480739. The reversal of 6480730 is 370846.

It can be written as a sum of positive squares in 2 ways, for example, as 5564881 + 915849 = 2359^2 + 957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6480730² = 83999722665800, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6480739) 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, 324027 + ... + 324046.

Almost surely, 2^6480730 is an apocalyptic number.

6480730 is a deficient number, since it is larger than the sum of its proper divisors (5184602).

6480730 is a wasteful number, since it uses less digits than its factorization.

6480730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648080.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6480730 is about 2545.7277937753. The cubic root of 6480730 is about 186.4409509577.

The spelling of 6480730 in words is "six million, four hundred eighty thousand, seven hundred thirty".