648029 has 2 divisors, whose sum is σ = 648030. Its totient is φ = 648028.

The previous prime is 648019. The next prime is 648041. The reversal of 648029 is 920846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 4 = 805^2 + 2^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648029 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 647992 and 648010.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648029.

It is not a weakly prime, because it can be changed into another prime (648019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324014 + 324015.

It is an arithmetic number, because the mean of its divisors is an integer number (324015).

2⁶⁴⁸⁰²⁹ is an apocalyptic number.

It is an amenable number.

648029 is a deficient number, since it is larger than the sum of its proper divisors (1).

648029 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 11 representation: 648029 = (402968)₁₁.

648029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 648029 is about 805.0024844682. The cubic root of 648029 is about 86.5362651016.

The spelling of 648029 in words is "six hundred forty-eight thousand, twenty-nine".