68793658 has 4 divisors (see below), whose sum is σ = 103190490. Its totient is φ = 34396828.

The previous prime is 68793653. The next prime is 68793677. The reversal of 68793658 is 85639786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85639786 = 2 ⋅42819893.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 16621929 = 7223^2 + 4077^2 .

It is not an unprimeable number, because it can be changed into a prime (68793653) by changing a digit.

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 as a sum of consecutive naturals, namely, 17198413 + ... + 17198416.

Almost surely, 2^68793658 is an apocalyptic number.

68793658 is a deficient number, since it is larger than the sum of its proper divisors (34396832).

68793658 is a wasteful number, since it uses less digits than its factorization.

68793658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34396831.

The product of its digits is 2177280, while the sum is 52.

The square root of 68793658 is about 8294.1942345233. The cubic root of 68793658 is about 409.7473319284.

The spelling of 68793658 in words is "sixty-eight million, seven hundred ninety-three thousand, six hundred fifty-eight".