1282649 has 2 divisors, whose sum is σ = 1282650. Its totient is φ = 1282648.

The previous prime is 1282639. The next prime is 1282657. The reversal of 1282649 is 9462821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1281424 + 1225 = 1132^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282649 - 2¹⁶ = 1217113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1282639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641324 + 641325.

It is an arithmetic number, because the mean of its divisors is an integer number (641325).

2^1282649 is an apocalyptic number.

It is an amenable number.

1282649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282649 is an equidigital number, since it uses as much as digits as its factorization.

1282649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 1282649 is about 1132.5409484871. The cubic root of 1282649 is about 108.6515540143.

The spelling of 1282649 in words is "one million, two hundred eighty-two thousand, six hundred forty-nine".