648798 has 16 divisors (see below), whose sum is σ = 1316736. Its totient is φ = 213080.

The previous prime is 648779. The next prime is 648803. The reversal of 648798 is 897846.

It is a happy number.

It is a congruent number.

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, 336 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (82296).

2⁶⁴⁸⁷⁹⁸ is an apocalyptic number.

648798 is an abundant number, since it is smaller than the sum of its proper divisors (667938).

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

648798 is a wasteful number, since it uses less digits than its factorization.

648798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599.

The product of its digits is 96768, while the sum is 42.

The square root of 648798 is about 805.4799811293. The cubic root of 648798 is about 86.5704817196.

The spelling of 648798 in words is "six hundred forty-eight thousand, seven hundred ninety-eight".