7068138 has 32 divisors (see below), whose sum is σ = 17625600. Its totient is φ = 1835760.

The previous prime is 7068137. The next prime is 7068143. The reversal of 7068138 is 8318607.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7068099 and 7068108.

It is not an unprimeable number, because it can be changed into a prime (7068137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7188 + ... + 8111.

It is an arithmetic number, because the mean of its divisors is an integer number (550800).

Almost surely, 2^7068138 is an apocalyptic number.

7068138 is an abundant number, since it is smaller than the sum of its proper divisors (10557462).

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

7068138 is a wasteful number, since it uses less digits than its factorization.

7068138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15322.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7068138 is about 2658.5969984185. The cubic root of 7068138 is about 191.9117975948.

The spelling of 7068138 in words is "seven million, sixty-eight thousand, one hundred thirty-eight".