71708893 has 2 divisors, whose sum is σ = 71708894. Its totient is φ = 71708892.

The previous prime is 71708809. The next prime is 71708927. The reversal of 71708893 is 39880717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36638809 + 35070084 = 6053^2 + 5922^2 .

It is an emirp because it is prime and its reverse (39880717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71708893 - 2⁹ = 71708381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71708803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35854446 + 35854447.

It is an arithmetic number, because the mean of its divisors is an integer number (35854447).

Almost surely, 2^71708893 is an apocalyptic number.

It is an amenable number.

71708893 is a deficient number, since it is larger than the sum of its proper divisors (1).

71708893 is an equidigital number, since it uses as much as digits as its factorization.

71708893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 71708893 is about 8468.1103559177. The cubic root of 71708893 is about 415.4553341670.

It can be divided in two parts, 71 and 708893, that added together give a square (708964 = 842²).

The spelling of 71708893 in words is "seventy-one million, seven hundred eight thousand, eight hundred ninety-three".