68911258 has 8 divisors (see below), whose sum is σ = 111318228. Its totient is φ = 31805184.

The previous prime is 68911253. The next prime is 68911267. The reversal of 68911258 is 85211986.

It can be written as a sum of positive squares in 2 ways, for example, as 66373609 + 2537649 = 8147^2 + 1593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×68911258² = 9497522958285128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68911258.

It is not an unprimeable number, because it can be changed into a prime (68911253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325191 + ... + 1325242.

Almost surely, 2^68911258 is an apocalyptic number.

68911258 is a deficient number, since it is larger than the sum of its proper divisors (42406970).

68911258 is a wasteful number, since it uses less digits than its factorization.

68911258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650448.

The product of its digits is 34560, while the sum is 40.

The square root of 68911258 is about 8301.2805036332. The cubic root of 68911258 is about 409.9806812234.

It can be divided in two parts, 68911 and 258, that added together give a square (69169 = 263²).

The spelling of 68911258 in words is "sixty-eight million, nine hundred eleven thousand, two hundred fifty-eight".