712212071 has 4 divisors (see below), whose sum is σ = 712359432. Its totient is φ = 712064712.

The previous prime is 712212047. The next prime is 712212091. The reversal of 712212071 is 170212217.

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-712212071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712212031) 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 in 3 ways as a sum of consecutive naturals, for example, 66176 + ... + 76181.

It is an arithmetic number, because the mean of its divisors is an integer number (178089858).

Almost surely, 2^712212071 is an apocalyptic number.

712212071 is a deficient number, since it is larger than the sum of its proper divisors (147361).

712212071 is a wasteful number, since it uses less digits than its factorization.

712212071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147360.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 712212071 is about 26687.3016807620. The cubic root of 712212071 is about 893.0376660239.

Adding to 712212071 its reverse (170212217), we get a palindrome (882424288).

The spelling of 712212071 in words is "seven hundred twelve million, two hundred twelve thousand, seventy-one".