648379 has 2 divisors, whose sum is σ = 648380. Its totient is φ = 648378.

The previous prime is 648377. The next prime is 648383. The reversal of 648379 is 973846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648379 - 2¹ = 648377 is a prime.

Together with 648377, it forms a pair of twin primes.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6⁶ + 4⁵ + 3⁹ + 8⁵ + 7⁵ + 9⁶ .

648379 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (648371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324189 + 324190.

It is an arithmetic number, because the mean of its divisors is an integer number (324190).

2⁶⁴⁸³⁷⁹ is an apocalyptic number.

648379 is a deficient number, since it is larger than the sum of its proper divisors (1).

648379 is an equidigital number, since it uses as much as digits as its factorization.

648379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 648379 is about 805.2198457564. The cubic root of 648379 is about 86.5518416893.

It can be divided in two parts, 64837 and 9, that added together give a palindrome (64846).

The spelling of 648379 in words is "six hundred forty-eight thousand, three hundred seventy-nine".