712105838 has 4 divisors (see below), whose sum is σ = 1068158760. Its totient is φ = 356052918.

The previous prime is 712105837. The next prime is 712105859. The reversal of 712105838 is 838501217.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 712105798 and 712105807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712105831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178026458 + ... + 178026461.

It is an arithmetic number, because the mean of its divisors is an integer number (267039690).

Almost surely, 2^712105838 is an apocalyptic number.

712105838 is a deficient number, since it is larger than the sum of its proper divisors (356052922).

712105838 is a wasteful number, since it uses less digits than its factorization.

712105838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356052921.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 712105838 is about 26685.3112779297. The cubic root of 712105838 is about 892.9932622142.

The spelling of 712105838 in words is "seven hundred twelve million, one hundred five thousand, eight hundred thirty-eight".