6480739 has 2 divisors, whose sum is σ = 6480740. Its totient is φ = 6480738.

The previous prime is 6480707. The next prime is 6480751. The reversal of 6480739 is 9370846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6480739 - 2⁵ = 6480707 is a prime.

It is a super-2 number, since 2×6480739² = 83999955972242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6480698 and 6480707.

It is not a weakly prime, because it can be changed into another prime (6480139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240369 + 3240370.

It is an arithmetic number, because the mean of its divisors is an integer number (3240370).

Almost surely, 2^6480739 is an apocalyptic number.

6480739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6480739 is an equidigital number, since it uses as much as digits as its factorization.

6480739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 6480739 is about 2545.7295614421. The cubic root of 6480739 is about 186.4410372632.

It can be divided in two parts, 64807 and 39, that added together give a palindrome (64846).

The spelling of 6480739 in words is "six million, four hundred eighty thousand, seven hundred thirty-nine".