68943638 has 8 divisors (see below), whose sum is σ = 103789632. Its totient is φ = 34347096.

The previous prime is 68943629. The next prime is 68943661. The reversal of 68943638 is 83634986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 68943592 and 68943601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61670 + ... + 62777.

It is an arithmetic number, because the mean of its divisors is an integer number (12973704).

Almost surely, 2^68943638 is an apocalyptic number.

68943638 is a deficient number, since it is larger than the sum of its proper divisors (34845994).

68943638 is a wasteful number, since it uses less digits than its factorization.

68943638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124726.

The product of its digits is 746496, while the sum is 47.

The square root of 68943638 is about 8303.2305761071. The cubic root of 68943638 is about 410.0448850325.

The spelling of 68943638 in words is "sixty-eight million, nine hundred forty-three thousand, six hundred thirty-eight".