648726 has 16 divisors (see below), whose sum is σ = 1397424. Its totient is φ = 199584.

The previous prime is 648719. The next prime is 648731. The reversal of 648726 is 627846.

648726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

648726 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081 + ... + 4236.

It is an arithmetic number, because the mean of its divisors is an integer number (87339).

2⁶⁴⁸⁷²⁶ is an apocalyptic number.

648726 is an abundant number, since it is smaller than the sum of its proper divisors (748698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648726 is a wasteful number, since it uses less digits than its factorization.

648726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8335.

The product of its digits is 16128, while the sum is 33.

The square root of 648726 is about 805.4352860410. The cubic root of 648726 is about 86.5672792306.

The spelling of 648726 in words is "six hundred forty-eight thousand, seven hundred twenty-six".