33648649 has 2 divisors, whose sum is σ = 33648650. Its totient is φ = 33648648.

The previous prime is 33648647. The next prime is 33648679. The reversal of 33648649 is 94684633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33640000 + 8649 = 5800^2 + 93^2 .

It is a cyclic number.

It is not a de Polignac number, because 33648649 - 2¹ = 33648647 is a prime.

It is a super-2 number, since 2×33648649² = 2264463159050402, which contains 22 as substring.

Together with 33648647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33648647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16824324 + 16824325.

It is an arithmetic number, because the mean of its divisors is an integer number (16824325).

Almost surely, 2^33648649 is an apocalyptic number.

It is an amenable number.

33648649 is a deficient number, since it is larger than the sum of its proper divisors (1).

33648649 is an equidigital number, since it uses as much as digits as its factorization.

33648649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 43.

The square root of 33648649 is about 5800.7455555299. The cubic root of 33648649 is about 322.8413915824.

It can be divided in two parts, 3364 and 8649, that multiplied together give a square (29095236 = 5394²).

The spelling of 33648649 in words is "thirty-three million, six hundred forty-eight thousand, six hundred forty-nine".