71682739 has 2 divisors, whose sum is σ = 71682740. Its totient is φ = 71682738.

The previous prime is 71682733. The next prime is 71682749. The reversal of 71682739 is 93728617.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (93728617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71682739 - 2³ = 71682731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71682695 and 71682704.

It is not a weakly prime, because it can be changed into another prime (71682731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35841369 + 35841370.

It is an arithmetic number, because the mean of its divisors is an integer number (35841370).

Almost surely, 2^71682739 is an apocalyptic number.

71682739 is a deficient number, since it is larger than the sum of its proper divisors (1).

71682739 is an equidigital number, since it uses as much as digits as its factorization.

71682739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 71682739 is about 8466.5659508445. The cubic root of 71682739 is about 415.4048190931.

The spelling of 71682739 in words is "seventy-one million, six hundred eighty-two thousand, seven hundred thirty-nine".