68894138 has 4 divisors (see below), whose sum is σ = 103341210. Its totient is φ = 34447068.

The previous prime is 68894129. The next prime is 68894143. The reversal of 68894138 is 83149886.

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

It can be written as a sum of positive squares in only one way, i.e., 43864129 + 25030009 = 6623^2 + 5003^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68894092 and 68894101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17223533 + ... + 17223536.

Almost surely, 2^68894138 is an apocalyptic number.

68894138 is a deficient number, since it is larger than the sum of its proper divisors (34447072).

68894138 is a wasteful number, since it uses less digits than its factorization.

68894138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34447071.

The product of its digits is 331776, while the sum is 47.

The square root of 68894138 is about 8300.2492733652. The cubic root of 68894138 is about 409.9467271652.

The spelling of 68894138 in words is "sixty-eight million, eight hundred ninety-four thousand, one hundred thirty-eight".