648842 has 8 divisors (see below), whose sum is σ = 976800. Its totient is φ = 323244.

The previous prime is 648841. The next prime is 648859. The reversal of 648842 is 248846.

648842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 648799 and 648808.

It is not an unprimeable number, because it can be changed into a prime (648841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509 + ... + 1247.

It is an arithmetic number, because the mean of its divisors is an integer number (122100).

2⁶⁴⁸⁸⁴² is an apocalyptic number.

648842 is a deficient number, since it is larger than the sum of its proper divisors (327958).

648842 is a wasteful number, since it uses less digits than its factorization.

648842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its digits is 12288, while the sum is 32.

The square root of 648842 is about 805.5072935734. The cubic root of 648842 is about 86.5724386795.

The spelling of 648842 in words is "six hundred forty-eight thousand, eight hundred forty-two".