612138068 has 12 divisors (see below), whose sum is σ = 1075921140. Its totient is φ = 304732032.

The previous prime is 612138053. The next prime is 612138071. The reversal of 612138068 is 860831216.

612138068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 595262404 + 16875664 = 24398^2 + 4108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333221 + ... + 335052.

It is an arithmetic number, because the mean of its divisors is an integer number (89660095).

Almost surely, 2^612138068 is an apocalyptic number.

It is an amenable number.

612138068 is a deficient number, since it is larger than the sum of its proper divisors (463783072).

612138068 is a wasteful number, since it uses less digits than its factorization.

612138068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668506 (or 668504 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 612138068 is about 24741.4241303931. The cubic root of 612138068 is about 849.0823166361.

The spelling of 612138068 in words is "six hundred twelve million, one hundred thirty-eight thousand, sixty-eight".