1333649 has 2 divisors, whose sum is σ = 1333650. Its totient is φ = 1333648.

The previous prime is 1333621. The next prime is 1333663. The reversal of 1333649 is 9463331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 283024 = 1025^2 + 532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1333649 - 2⁸ = 1333393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1333669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666824 + 666825.

It is an arithmetic number, because the mean of its divisors is an integer number (666825).

2^1333649 is an apocalyptic number.

It is an amenable number.

1333649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1333649 is an equidigital number, since it uses as much as digits as its factorization.

1333649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 29.

The square root of 1333649 is about 1154.8372179662. The cubic root of 1333649 is about 110.0729268475.

The spelling of 1333649 in words is "one million, three hundred thirty-three thousand, six hundred forty-nine".