648718 has 8 divisors (see below), whose sum is σ = 1112112. Its totient is φ = 278016.

The previous prime is 648709. The next prime is 648719. The reversal of 648718 is 817846.

It is a happy number.

648718 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648719) 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, 23155 + ... + 23182.

It is an arithmetic number, because the mean of its divisors is an integer number (139014).

2⁶⁴⁸⁷¹⁸ is an apocalyptic number.

648718 is a deficient number, since it is larger than the sum of its proper divisors (463394).

648718 is a wasteful number, since it uses less digits than its factorization.

648718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46346.

The product of its digits is 10752, while the sum is 34.

The square root of 648718 is about 805.4303197670. The cubic root of 648718 is about 86.5669233839.

The spelling of 648718 in words is "six hundred forty-eight thousand, seven hundred eighteen".