649141 has 2 divisors, whose sum is σ = 649142. Its totient is φ = 649140.

The previous prime is 649123. The next prime is 649147. The reversal of 649141 is 141946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 306916 = 585^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 649141 - 2⁹ = 648629 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649147) 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, 324570 + 324571.

It is an arithmetic number, because the mean of its divisors is an integer number (324571).

2⁶⁴⁹¹⁴¹ is an apocalyptic number.

It is an amenable number.

649141 is a deficient number, since it is larger than the sum of its proper divisors (1).

649141 is an equidigital number, since it uses as much as digits as its factorization.

649141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 649141 is about 805.6928695229. The cubic root of 649141 is about 86.5857347691.

The spelling of 649141 in words is "six hundred forty-nine thousand, one hundred forty-one".