68750258 has 4 divisors (see below), whose sum is σ = 103125390. Its totient is φ = 34375128.

The previous prime is 68750251. The next prime is 68750273. The reversal of 68750258 is 85205786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85205786 = 2 ⋅42602893.

It can be written as a sum of positive squares in only one way, i.e., 50027329 + 18722929 = 7073^2 + 4327^2 .

It is not an unprimeable number, because it can be changed into a prime (68750251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17187563 + ... + 17187566.

Almost surely, 2^68750258 is an apocalyptic number.

68750258 is a deficient number, since it is larger than the sum of its proper divisors (34375132).

68750258 is a wasteful number, since it uses less digits than its factorization.

68750258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34375131.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 68750258 is about 8291.5775338593. The cubic root of 68750258 is about 409.6611477479.

The spelling of 68750258 in words is "sixty-eight million, seven hundred fifty thousand, two hundred fifty-eight".