68354140 has 12 divisors (see below), whose sum is σ = 143543736. Its totient is φ = 27341648.

The previous prime is 68354129. The next prime is 68354141. The reversal of 68354140 is 4145386.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68354141) 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, 1708834 + ... + 1708873.

It is an arithmetic number, because the mean of its divisors is an integer number (11961978).

Almost surely, 2^68354140 is an apocalyptic number.

It is an amenable number.

68354140 is an abundant number, since it is smaller than the sum of its proper divisors (75189596).

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

68354140 is a wasteful number, since it uses less digits than its factorization.

68354140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3417716 (or 3417714 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 68354140 is about 8267.6562579730. The cubic root of 68354140 is about 408.8728510018.

The spelling of 68354140 in words is "sixty-eight million, three hundred fifty-four thousand, one hundred forty".