68061642 has 32 divisors (see below), whose sum is σ = 157235904. Its totient is φ = 19411200.

The previous prime is 68061641. The next prime is 68061649. The reversal of 68061642 is 24616086.

It is a happy number.

It is a super-2 number, since 2×68061642² = 9264774223472328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (68061641) 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 in 15 ways as a sum of consecutive naturals, for example, 29209 + ... + 31452.

It is an arithmetic number, because the mean of its divisors is an integer number (4913622).

Almost surely, 2^68061642 is an apocalyptic number.

68061642 is an abundant number, since it is smaller than the sum of its proper divisors (89174262).

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

68061642 is a wasteful number, since it uses less digits than its factorization.

68061642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60694.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 68061642 is about 8249.9479998361. The cubic root of 68061642 is about 408.2888069547.

It can be divided in two parts, 6806 and 1642, that added together give a palindrome (8448).

The spelling of 68061642 in words is "sixty-eight million, sixty-one thousand, six hundred forty-two".