648061 has 2 divisors, whose sum is σ = 648062. Its totient is φ = 648060.

The previous prime is 648059. The next prime is 648073. The reversal of 648061 is 160846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648025 + 36 = 805^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 648061 - 2¹ = 648059 is a prime.

Together with 648059, it forms a pair of twin primes.

648061 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324030 + 324031.

It is an arithmetic number, because the mean of its divisors is an integer number (324031).

2⁶⁴⁸⁰⁶¹ is an apocalyptic number.

It is an amenable number.

648061 is a deficient number, since it is larger than the sum of its proper divisors (1).

648061 is an equidigital number, since it uses as much as digits as its factorization.

648061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 648061 is about 805.0223599379. The cubic root of 648061 is about 86.5376894797.

The spelling of 648061 in words is "six hundred forty-eight thousand, sixty-one".