648455 has 8 divisors (see below), whose sum is σ = 793152. Its totient is φ = 508768.

The previous prime is 648449. The next prime is 648481. The reversal of 648455 is 554846.

648455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648455 - 2⁶ = 648391 is a prime.

It is a Duffinian number.

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 648455.

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, 959 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (99144).

2⁶⁴⁸⁴⁵⁵ is an apocalyptic number.

648455 is a deficient number, since it is larger than the sum of its proper divisors (144697).

648455 is a wasteful number, since it uses less digits than its factorization.

648455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505.

The product of its digits is 19200, while the sum is 32.

The square root of 648455 is about 805.2670364544. The cubic root of 648455 is about 86.5552232932. Note that the first 3 decimals are identical.

The spelling of 648455 in words is "six hundred forty-eight thousand, four hundred fifty-five".