648330 has 16 divisors (see below), whose sum is σ = 1556064. Its totient is φ = 172880.

The previous prime is 648317. The next prime is 648331. The reversal of 648330 is 33846.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 648330.

It is not an unprimeable number, because it can be changed into a prime (648331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10776 + ... + 10835.

It is an arithmetic number, because the mean of its divisors is an integer number (97254).

2⁶⁴⁸³³⁰ is an apocalyptic number.

648330 is an abundant number, since it is smaller than the sum of its proper divisors (907734).

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

648330 is a wasteful number, since it uses less digits than its factorization.

648330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21621.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 648330 is about 805.1894187084. The cubic root of 648330 is about 86.5496613045.

The spelling of 648330 in words is "six hundred forty-eight thousand, three hundred thirty".