68151858 has 8 divisors (see below), whose sum is σ = 136303728. Its totient is φ = 22717284.

The previous prime is 68151791. The next prime is 68151859. The reversal of 68151858 is 85815186.

It is a happy number.

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

68151858 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68151859) 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 in 3 ways as a sum of consecutive naturals, for example, 5679316 + ... + 5679327.

It is an arithmetic number, because the mean of its divisors is an integer number (17037966).

Almost surely, 2^68151858 is an apocalyptic number.

68151858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68151858 is a wasteful number, since it uses less digits than its factorization.

68151858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358648.

The product of its digits is 76800, while the sum is 42.

The square root of 68151858 is about 8255.4138600073. The cubic root of 68151858 is about 408.4691234995.

The spelling of 68151858 in words is "sixty-eight million, one hundred fifty-one thousand, eight hundred fifty-eight".