1640033 has 2 divisors, whose sum is σ = 1640034. Its totient is φ = 1640032.

The previous prime is 1640021. The next prime is 1640053. The reversal of 1640033 is 3300461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456849 + 183184 = 1207^2 + 428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1640033 - 2⁴ = 1640017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1639993 and 1640020.

It is not a weakly prime, because it can be changed into another prime (1640053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820016 + 820017.

It is an arithmetic number, because the mean of its divisors is an integer number (820017).

2^1640033 is an apocalyptic number.

It is an amenable number.

1640033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1640033 is an equidigital number, since it uses as much as digits as its factorization.

1640033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1640033 is about 1280.6377317571. The cubic root of 1640033 is about 117.9281617704.

Adding to 1640033 its reverse (3300461), we get a palindrome (4940494).

The spelling of 1640033 in words is "one million, six hundred forty thousand, thirty-three".