612068181 has 8 divisors (see below), whose sum is σ = 824171424. Its totient is φ = 404005200.

The previous prime is 612068161. The next prime is 612068189. The reversal of 612068181 is 181860216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612068181 - 2⁹ = 612067669 is a prime.

It is a super-2 number, since 2×612068181² = 749254916385297522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612068189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009711 + ... + 1010316.

It is an arithmetic number, because the mean of its divisors is an integer number (103021428).

Almost surely, 2^612068181 is an apocalyptic number.

It is an amenable number.

612068181 is a deficient number, since it is larger than the sum of its proper divisors (212103243).

612068181 is a wasteful number, since it uses less digits than its factorization.

612068181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020131.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 612068181 is about 24740.0117421152. The cubic root of 612068181 is about 849.0500025350.

The spelling of 612068181 in words is "six hundred twelve million, sixty-eight thousand, one hundred eighty-one".