648355 has 4 divisors (see below), whose sum is σ = 778032. Its totient is φ = 518680.

The previous prime is 648343. The next prime is 648371. The reversal of 648355 is 553846.

648355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 648355 - 2¹¹ = 646307 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.

648355 is a lucky 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, 64831 + ... + 64840.

It is an arithmetic number, because the mean of its divisors is an integer number (194508).

2⁶⁴⁸³⁵⁵ is an apocalyptic number.

648355 is a deficient number, since it is larger than the sum of its proper divisors (129677).

648355 is a wasteful number, since it uses less digits than its factorization.

648355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129676.

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

The square root of 648355 is about 805.2049428562. The cubic root of 648355 is about 86.5507737594.

The spelling of 648355 in words is "six hundred forty-eight thousand, three hundred fifty-five".