68501633 has 4 divisors (see below), whose sum is σ = 68532180. Its totient is φ = 68471088.

The previous prime is 68501621. The next prime is 68501639. The reversal of 68501633 is 33610586.

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 27962944 + 40538689 = 5288^2 + 6367^2 .

It is a cyclic number.

It is not a de Polignac number, because 68501633 - 2⁶ = 68501569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68501633.

It is not an unprimeable number, because it can be changed into a prime (68501639) 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 in 3 ways as a sum of consecutive naturals, for example, 11618 + ... + 16491.

It is an arithmetic number, because the mean of its divisors is an integer number (17133045).

Almost surely, 2^68501633 is an apocalyptic number.

It is an amenable number.

68501633 is a deficient number, since it is larger than the sum of its proper divisors (30547).

68501633 is a wasteful number, since it uses less digits than its factorization.

68501633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30546.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 68501633 is about 8276.5713311733. The cubic root of 68501633 is about 409.1667252270.

The spelling of 68501633 in words is "sixty-eight million, five hundred one thousand, six hundred thirty-three".