71206393 has 2 divisors, whose sum is σ = 71206394. Its totient is φ = 71206392.

The previous prime is 71206391. The next prime is 71206453. The reversal of 71206393 is 39360217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 595984 = 8403^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 71206393 - 2¹ = 71206391 is a prime.

Together with 71206391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71206391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35603196 + 35603197.

It is an arithmetic number, because the mean of its divisors is an integer number (35603197).

Almost surely, 2^71206393 is an apocalyptic number.

It is an amenable number.

71206393 is a deficient number, since it is larger than the sum of its proper divisors (1).

71206393 is an equidigital number, since it uses as much as digits as its factorization.

71206393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 71206393 is about 8438.3880569692. The cubic root of 71206393 is about 414.4826242411.

The spelling of 71206393 in words is "seventy-one million, two hundred six thousand, three hundred ninety-three".