648898 has 4 divisors (see below), whose sum is σ = 973350. Its totient is φ = 324448.

The previous prime is 648889. The next prime is 648911. The reversal of 648898 is 898846.

648898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 635209 + 13689 = 797^2 + 117^2 .

It is a super-2 number, since 2×648898² = 842137228808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162223 + ... + 162226.

2⁶⁴⁸⁸⁹⁸ is an apocalyptic number.

648898 is a deficient number, since it is larger than the sum of its proper divisors (324452).

648898 is a wasteful number, since it uses less digits than its factorization.

648898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324451.

The product of its digits is 110592, while the sum is 43.

The square root of 648898 is about 805.5420535267. The cubic root of 648898 is about 86.5749292279.

The spelling of 648898 in words is "six hundred forty-eight thousand, eight hundred ninety-eight".