68643386 has 24 divisors (see below), whose sum is σ = 119203680. Its totient is φ = 29041056.

The previous prime is 68643353. The next prime is 68643391. The reversal of 68643386 is 68334686.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 110585 + ... + 111203.

It is an arithmetic number, because the mean of its divisors is an integer number (4966820).

Almost surely, 2^68643386 is an apocalyptic number.

68643386 is a deficient number, since it is larger than the sum of its proper divisors (50560294).

68643386 is an equidigital number, since it uses as much as digits as its factorization.

68643386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 717 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 68643386 is about 8285.1304153888. The cubic root of 68643386 is about 409.4487654576.

The spelling of 68643386 in words is "sixty-eight million, six hundred forty-three thousand, three hundred eighty-six".