842648 has 8 divisors (see below), whose sum is σ = 1579980. Its totient is φ = 421320.

The previous prime is 842627. The next prime is 842657. The reversal of 842648 is 846248.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 842648.

It is an unprimeable number.

842648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52658 + ... + 52673.

2⁸⁴²⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

842648 is a deficient number, since it is larger than the sum of its proper divisors (737332).

842648 is a wasteful number, since it uses less digits than its factorization.

842648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105337 (or 105333 counting only the distinct ones).

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

The square root of 842648 is about 917.9586047312. The cubic root of 842648 is about 94.4529220636.

Subtracting 842648 from its reverse (846248), we obtain a square (3600 = 60²).

The spelling of 842648 in words is "eight hundred forty-two thousand, six hundred forty-eight".