68138754 has 32 divisors (see below), whose sum is σ = 145069056. Its totient is φ = 21262080.

The previous prime is 68138747. The next prime is 68138803. The reversal of 68138754 is 45783186.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18399 + ... + 21789.

It is an arithmetic number, because the mean of its divisors is an integer number (4533408).

Almost surely, 2^68138754 is an apocalyptic number.

68138754 is an abundant number, since it is smaller than the sum of its proper divisors (76930302).

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

68138754 is a wasteful number, since it uses less digits than its factorization.

68138754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610.

The product of its digits is 161280, while the sum is 42.

The square root of 68138754 is about 8254.6201608554. The cubic root of 68138754 is about 408.4429421518.

The spelling of 68138754 in words is "sixty-eight million, one hundred thirty-eight thousand, seven hundred fifty-four".