648755 has 8 divisors (see below), whose sum is σ = 819600. Its totient is φ = 491616.

The previous prime is 648731. The next prime is 648763. The reversal of 648755 is 557846.

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 648755 - 2¹⁴ = 632371 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3320 + ... + 3509.

It is an arithmetic number, because the mean of its divisors is an integer number (102450).

2⁶⁴⁸⁷⁵⁵ is an apocalyptic number.

648755 is a deficient number, since it is larger than the sum of its proper divisors (170845).

648755 is a wasteful number, since it uses less digits than its factorization.

648755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853.

The product of its digits is 33600, while the sum is 35.

The square root of 648755 is about 805.4532885276. The cubic root of 648755 is about 86.5685691505.

Subtracting from 648755 its reverse (557846), we obtain a palindrome (90909).

The spelling of 648755 in words is "six hundred forty-eight thousand, seven hundred fifty-five".