648104 has 8 divisors (see below), whose sum is σ = 1215210. Its totient is φ = 324048.

The previous prime is 648101. The next prime is 648107. The reversal of 648104 is 401846.

It is a happy number.

648104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (648101) and next prime (648107).

It can be written as a sum of positive squares in only one way, i.e., 643204 + 4900 = 802^2 + 70^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 648104.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648104.

It is not an unprimeable number, because it can be changed into a prime (648101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40499 + ... + 40514.

2⁶⁴⁸¹⁰⁴ is an apocalyptic number.

It is an amenable number.

648104 is a deficient number, since it is larger than the sum of its proper divisors (567106).

648104 is a wasteful number, since it uses less digits than its factorization.

648104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81019 (or 81015 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 648104 is about 805.0490668276. The cubic root of 648104 is about 86.5396034139.

The spelling of 648104 in words is "six hundred forty-eight thousand, one hundred four".