648763 has 2 divisors, whose sum is σ = 648764. Its totient is φ = 648762.

The previous prime is 648731. The next prime is 648779. The reversal of 648763 is 367846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648763 - 2⁵ = 648731 is a prime.

It is not a weakly prime, because it can be changed into another prime (648563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324381 + 324382.

It is an arithmetic number, because the mean of its divisors is an integer number (324382).

2⁶⁴⁸⁷⁶³ is an apocalyptic number.

648763 is a deficient number, since it is larger than the sum of its proper divisors (1).

648763 is an equidigital number, since it uses as much as digits as its factorization.

648763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 648763 is about 805.4582546600. The cubic root of 648763 is about 86.5689249837.

The spelling of 648763 in words is "six hundred forty-eight thousand, seven hundred sixty-three".