648895 has 16 divisors (see below), whose sum is σ = 856800. Its totient is φ = 468864.

The previous prime is 648889. The next prime is 648911. The reversal of 648895 is 598846.

It is a cyclic number.

It is not a de Polignac number, because 648895 - 2³ = 648887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4281 + ... + 4429.

It is an arithmetic number, because the mean of its divisors is an integer number (53550).

2⁶⁴⁸⁸⁹⁵ is an apocalyptic number.

648895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

648895 is a deficient number, since it is larger than the sum of its proper divisors (207905).

648895 is a wasteful number, since it uses less digits than its factorization.

648895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its digits is 69120, while the sum is 40.

The square root of 648895 is about 805.5401914244. The cubic root of 648895 is about 86.5747958093.

The spelling of 648895 in words is "six hundred forty-eight thousand, eight hundred ninety-five".