68781194 has 4 divisors (see below), whose sum is σ = 103171794. Its totient is φ = 34390596.

The previous prime is 68781173. The next prime is 68781199. The reversal of 68781194 is 49118786.

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., 66015625 + 2765569 = 8125^2 + 1663^2 .

It is not an unprimeable number, because it can be changed into a prime (68781199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17195297 + ... + 17195300.

Almost surely, 2^68781194 is an apocalyptic number.

68781194 is a deficient number, since it is larger than the sum of its proper divisors (34390600).

68781194 is a wasteful number, since it uses less digits than its factorization.

68781194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34390599.

The product of its digits is 96768, while the sum is 44.

The square root of 68781194 is about 8293.4428315387. The cubic root of 68781194 is about 409.7225844960.

The spelling of 68781194 in words is "sixty-eight million, seven hundred eighty-one thousand, one hundred ninety-four".