648100 has 18 divisors (see below), whose sum is σ = 1406594. Its totient is φ = 259200.

The previous prime is 648097. The next prime is 648101. The reversal of 648100 is 1846.

648100 is nontrivially palindromic in base 7.

648100 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 3 ways, for example, as 166464 + 481636 = 408^2 + 694^2 .

It is a super-2 number, since 2×648100² = 840067220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (648101) 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, 3141 + ... + 3340.

2⁶⁴⁸¹⁰⁰ is an apocalyptic number.

It is an amenable number.

648100 is an abundant number, since it is smaller than the sum of its proper divisors (758494).

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

648100 is a wasteful number, since it uses less digits than its factorization.

648100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495 (or 6488 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 648100 is about 805.0465825031. The cubic root of 648100 is about 86.5394253770.

Adding to 648100 its reverse (1846), we get a palindrome (649946).

It can be divided in two parts, 64 and 8100, that multiplied together give a square (518400 = 720²).

The spelling of 648100 in words is "six hundred forty-eight thousand, one hundred".