712161643 has 4 divisors (see below), whose sum is σ = 712359208. Its totient is φ = 711964080.

The previous prime is 712161631. The next prime is 712161707. The reversal of 712161643 is 346161217.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-712161643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (710161643) 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 3 ways as a sum of consecutive naturals, for example, 93273 + ... + 100618.

It is an arithmetic number, because the mean of its divisors is an integer number (178089802).

Almost surely, 2^712161643 is an apocalyptic number.

712161643 is a deficient number, since it is larger than the sum of its proper divisors (197565).

712161643 is a wasteful number, since it uses less digits than its factorization.

712161643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197564.

The product of its digits is 6048, while the sum is 31.

The square root of 712161643 is about 26686.3568701312. The cubic root of 712161643 is about 893.0165884225.

The spelling of 712161643 in words is "seven hundred twelve million, one hundred sixty-one thousand, six hundred forty-three".