71712829 has 2 divisors, whose sum is σ = 71712830. Its totient is φ = 71712828.

The previous prime is 71712811. The next prime is 71712857. The reversal of 71712829 is 92821717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68508729 + 3204100 = 8277^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 71712829 - 2⁷ = 71712701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71772829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35856414 + 35856415.

It is an arithmetic number, because the mean of its divisors is an integer number (35856415).

Almost surely, 2^71712829 is an apocalyptic number.

It is an amenable number.

71712829 is a deficient number, since it is larger than the sum of its proper divisors (1).

71712829 is an equidigital number, since it uses as much as digits as its factorization.

71712829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 37.

The square root of 71712829 is about 8468.3427540458. The cubic root of 71712829 is about 415.4629352804.

It can be divided in two parts, 7171 and 2829, that added together give a 4-th power (10000 = 10⁴).

The spelling of 71712829 in words is "seventy-one million, seven hundred twelve thousand, eight hundred twenty-nine".