649147 has 2 divisors, whose sum is σ = 649148. Its totient is φ = 649146.

The previous prime is 649141. The next prime is 649151. The reversal of 649147 is 741946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 649147 - 2¹¹ = 647099 is a prime.

It is a d-powerful number, because it can be written as 6² + 4 + 1 + 9⁶ + 4² + 7⁶ .

It is not a weakly prime, because it can be changed into another prime (649141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324573 + 324574.

It is an arithmetic number, because the mean of its divisors is an integer number (324574).

2⁶⁴⁹¹⁴⁷ is an apocalyptic number.

649147 is a deficient number, since it is larger than the sum of its proper divisors (1).

649147 is an equidigital number, since it uses as much as digits as its factorization.

649147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 649147 is about 805.6965930175. The cubic root of 649147 is about 86.5860015385.

The spelling of 649147 in words is "six hundred forty-nine thousand, one hundred forty-seven".