68281258 has 4 divisors (see below), whose sum is σ = 102421890. Its totient is φ = 34140628.

The previous prime is 68281253. The next prime is 68281289. The reversal of 68281258 is 85218286.

It is a happy number.

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., 63250209 + 5031049 = 7953^2 + 2243^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68281258.

It is not an unprimeable number, because it can be changed into a prime (68281253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17070313 + ... + 17070316.

Almost surely, 2^68281258 is an apocalyptic number.

68281258 is a deficient number, since it is larger than the sum of its proper divisors (34140632).

68281258 is a wasteful number, since it uses less digits than its factorization.

68281258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34140631.

The product of its digits is 61440, while the sum is 40.

The square root of 68281258 is about 8263.2474245904. The cubic root of 68281258 is about 408.7274802969.

The spelling of 68281258 in words is "sixty-eight million, two hundred eighty-one thousand, two hundred fifty-eight".