648270 has 80 divisors (see below), whose sum is σ = 2016720. Its totient is φ = 148176.

The previous prime is 648269. The next prime is 648283. The reversal of 648270 is 72846.

648270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 92607 + ... + 92613.

It is an arithmetic number, because the mean of its divisors is an integer number (25209).

2⁶⁴⁸²⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008360).

648270 is an abundant number, since it is smaller than the sum of its proper divisors (1368450).

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

648270 is an equidigital number, since it uses as much as digits as its factorization.

648270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 648270 is about 805.1521595326. The cubic root of 648270 is about 86.5469912960.

The spelling of 648270 in words is "six hundred forty-eight thousand, two hundred seventy".