648450 has 72 divisors (see below), whose sum is σ = 1915056. Its totient is φ = 156000.

The previous prime is 648449. The next prime is 648481. The reversal of 648450 is 54846.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4885 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (26598).

2⁶⁴⁸⁴⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957528).

648450 is an abundant number, since it is smaller than the sum of its proper divisors (1266606).

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

648450 is a wasteful number, since it uses less digits than its factorization.

648450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 648450 is about 805.2639318882. The cubic root of 648450 is about 86.5550008274. Note that the first 3 decimals are identical.

It can be divided in two parts, 648 and 450, that multiplied together give a square (291600 = 540²).

The spelling of 648450 in words is "six hundred forty-eight thousand, four hundred fifty".