648339 has 4 divisors (see below), whose sum is σ = 864456. Its totient is φ = 432224.

The previous prime is 648331. The next prime is 648341. The reversal of 648339 is 933846.

648339 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 648339 - 2³ = 648331 is a prime.

It is a D-number.

648339 is strictly pandigital in base 7.

648339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (648331) 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, 108054 + ... + 108059.

It is an arithmetic number, because the mean of its divisors is an integer number (216114).

2⁶⁴⁸³³⁹ is an apocalyptic number.

648339 is a deficient number, since it is larger than the sum of its proper divisors (216117).

648339 is a wasteful number, since it uses less digits than its factorization.

648339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216116.

The product of its digits is 15552, while the sum is 33.

The square root of 648339 is about 805.1950074361. The cubic root of 648339 is about 86.5500617916.

The spelling of 648339 in words is "six hundred forty-eight thousand, three hundred thirty-nine".