648727 has 4 divisors (see below), whose sum is σ = 657936. Its totient is φ = 639520.

The previous prime is 648719. The next prime is 648731. The reversal of 648727 is 727846.

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 648727 - 2³ = 648719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648692 and 648701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640727) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4498 + ... + 4639.

It is an arithmetic number, because the mean of its divisors is an integer number (164484).

2⁶⁴⁸⁷²⁷ is an apocalyptic number.

648727 is a deficient number, since it is larger than the sum of its proper divisors (9209).

648727 is an equidigital number, since it uses as much as digits as its factorization.

648727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9208.

The product of its digits is 18816, while the sum is 34.

The square root of 648727 is about 805.4359068231. The cubic root of 648727 is about 86.5673237113.

The spelling of 648727 in words is "six hundred forty-eight thousand, seven hundred twenty-seven".