67608138 has 32 divisors (see below), whose sum is σ = 147268800. Its totient is φ = 20566656.

The previous prime is 67608119. The next prime is 67608143. The reversal of 67608138 is 83180676.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 67608096 and 67608105.

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, 2073 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (4602150).

Almost surely, 2^67608138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67608138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73634400).

67608138 is an abundant number, since it is smaller than the sum of its proper divisors (79660662).

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

67608138 is a wasteful number, since it uses less digits than its factorization.

67608138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 67608138 is about 8222.4167979980. The cubic root of 67608138 is about 407.3799573643.

The spelling of 67608138 in words is "sixty-seven million, six hundred eight thousand, one hundred thirty-eight".