68893633 has 4 divisors (see below), whose sum is σ = 68925780. Its totient is φ = 68861488.

The previous prime is 68893619. The next prime is 68893637. The reversal of 68893633 is 33639886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27123264 + 41770369 = 5208^2 + 6463^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68893633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68893637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12610 + ... + 17227.

It is an arithmetic number, because the mean of its divisors is an integer number (17231445).

Almost surely, 2^68893633 is an apocalyptic number.

It is an amenable number.

68893633 is a deficient number, since it is larger than the sum of its proper divisors (32147).

68893633 is a wasteful number, since it uses less digits than its factorization.

68893633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32146.

The product of its digits is 559872, while the sum is 46.

The square root of 68893633 is about 8300.2188525364. The cubic root of 68893633 is about 409.9457255144.

The spelling of 68893633 in words is "sixty-eight million, eight hundred ninety-three thousand, six hundred thirty-three".