648226 has 4 divisors (see below), whose sum is σ = 972342. Its totient is φ = 324112.

The previous prime is 648217. The next prime is 648229. The reversal of 648226 is 622846.

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

It can be written as a sum of positive squares in only one way, i.e., 585225 + 63001 = 765^2 + 251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 648194 and 648203.

It is not an unprimeable number, because it can be changed into a prime (648229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162055 + ... + 162058.

2⁶⁴⁸²²⁶ is an apocalyptic number.

648226 is a deficient number, since it is larger than the sum of its proper divisors (324116).

648226 is a wasteful number, since it uses less digits than its factorization.

648226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324115.

The product of its digits is 4608, while the sum is 28.

The square root of 648226 is about 805.1248350411. The cubic root of 648226 is about 86.5450331850.

The spelling of 648226 in words is "six hundred forty-eight thousand, two hundred twenty-six".