648801 has 6 divisors (see below), whose sum is σ = 937170. Its totient is φ = 432528.

The previous prime is 648779. The next prime is 648803. The reversal of 648801 is 108846.

648801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 40401 = 780^2 + 201^2 .

It is not a de Polignac number, because 648801 - 2⁹ = 648289 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (648803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36036 + ... + 36053.

It is an arithmetic number, because the mean of its divisors is an integer number (156195).

2⁶⁴⁸⁸⁰¹ is an apocalyptic number.

It is an amenable number.

648801 is a deficient number, since it is larger than the sum of its proper divisors (288369).

648801 is a wasteful number, since it uses less digits than its factorization.

648801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72095 (or 72092 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 648801 is about 805.4818433708. The cubic root of 648801 is about 86.5706151515.

The spelling of 648801 in words is "six hundred forty-eight thousand, eight hundred one".