648129 has 8 divisors (see below), whose sum is σ = 887680. Its totient is φ = 420336.

The previous prime is 648119. The next prime is 648133. The reversal of 648129 is 921846.

648129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 648129 - 2⁵ = 648097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648096 and 648105.

It is not an unprimeable number, because it can be changed into a prime (648119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2809 + ... + 3030.

It is an arithmetic number, because the mean of its divisors is an integer number (110960).

2⁶⁴⁸¹²⁹ is an apocalyptic number.

It is an amenable number.

648129 is a deficient number, since it is larger than the sum of its proper divisors (239551).

648129 is a wasteful number, since it uses less digits than its factorization.

648129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879.

The product of its digits is 3456, while the sum is 30.

The square root of 648129 is about 805.0645936818. The cubic root of 648129 is about 86.5407161274.

It can be divided in two parts, 648 and 129, that added together give a palindrome (777).

The spelling of 648129 in words is "six hundred forty-eight thousand, one hundred twenty-nine".