71081683 has 2 divisors, whose sum is σ = 71081684. Its totient is φ = 71081682.

The previous prime is 71081677. The next prime is 71081693. The reversal of 71081683 is 38618017.

It is a weak prime.

It is an emirp because it is prime and its reverse (38618017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71081683 is a prime.

It is a super-2 number, since 2×71081683² = 10105211316224978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71081693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35540841 + 35540842.

It is an arithmetic number, because the mean of its divisors is an integer number (35540842).

Almost surely, 2^71081683 is an apocalyptic number.

71081683 is a deficient number, since it is larger than the sum of its proper divisors (1).

71081683 is an equidigital number, since it uses as much as digits as its factorization.

71081683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 71081683 is about 8430.9953742129. The cubic root of 71081683 is about 414.2405095855.

The spelling of 71081683 in words is "seventy-one million, eighty-one thousand, six hundred eighty-three".