68884643 has 4 divisors (see below), whose sum is σ = 69912840. Its totient is φ = 67856448.

The previous prime is 68884619. The next prime is 68884679. The reversal of 68884643 is 34648886.

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

It is a cyclic number.

It is not a de Polignac number, because 68884643 - 2¹² = 68880547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68884043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513998 + ... + 514131.

It is an arithmetic number, because the mean of its divisors is an integer number (17478210).

Almost surely, 2^68884643 is an apocalyptic number.

68884643 is a deficient number, since it is larger than the sum of its proper divisors (1028197).

68884643 is a wasteful number, since it uses less digits than its factorization.

68884643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028196.

The product of its digits is 884736, while the sum is 47.

The square root of 68884643 is about 8299.6772828828. The cubic root of 68884643 is about 409.9278933277.

The spelling of 68884643 in words is "sixty-eight million, eight hundred eighty-four thousand, six hundred forty-three".