648535 has 4 divisors (see below), whose sum is σ = 778248. Its totient is φ = 518824.

The previous prime is 648509. The next prime is 648563. The reversal of 648535 is 535846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 648535 - 2¹⁵ = 615767 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648497 and 648506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64849 + ... + 64858.

It is an arithmetic number, because the mean of its divisors is an integer number (194562).

2⁶⁴⁸⁵³⁵ is an apocalyptic number.

648535 is a deficient number, since it is larger than the sum of its proper divisors (129713).

648535 is a wasteful number, since it uses less digits than its factorization.

648535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129712.

The product of its digits is 14400, while the sum is 31.

The square root of 648535 is about 805.3167078858. The cubic root of 648535 is about 86.5587825909.

The spelling of 648535 in words is "six hundred forty-eight thousand, five hundred thirty-five".