648402 has 16 divisors (see below), whose sum is σ = 1321920. Its totient is φ = 211952.

The previous prime is 648391. The next prime is 648433. The reversal of 648402 is 204846.

648402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2⁶⁴⁸⁴⁰² is an apocalyptic number.

648402 is an abundant number, since it is smaller than the sum of its proper divisors (673518).

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

648402 is a wasteful number, since it uses less digits than its factorization.

648402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 648402 is about 805.2341274437. The cubic root of 648402 is about 86.5528650973.

Subtracting from 648402 its reverse (204846), we obtain a square (443556 = 666²).

The spelling of 648402 in words is "six hundred forty-eight thousand, four hundred two".