68364138 has 16 divisors (see below), whose sum is σ = 140063616. Its totient is φ = 22232160.

The previous prime is 68364133. The next prime is 68364139. The reversal of 68364138 is 83146386.

It is a junction number, because it is equal to n+sod(n) for n = 68364096 and 68364105.

It is not an unprimeable number, because it can be changed into a prime (68364133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138706 + ... + 139197.

It is an arithmetic number, because the mean of its divisors is an integer number (8753976).

Almost surely, 2^68364138 is an apocalyptic number.

68364138 is an abundant number, since it is smaller than the sum of its proper divisors (71699478).

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

68364138 is a wasteful number, since it uses less digits than its factorization.

68364138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277949.

The product of its digits is 82944, while the sum is 39.

The square root of 68364138 is about 8268.2608812253. The cubic root of 68364138 is about 408.8927849881.

The spelling of 68364138 in words is "sixty-eight million, three hundred sixty-four thousand, one hundred thirty-eight".