71096639 has 2 divisors, whose sum is σ = 71096640. Its totient is φ = 71096638.

The previous prime is 71096633. The next prime is 71096699. The reversal of 71096639 is 93669017.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71096639 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 71096596 and 71096605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71096633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35548319 + 35548320.

It is an arithmetic number, because the mean of its divisors is an integer number (35548320).

Almost surely, 2^71096639 is an apocalyptic number.

71096639 is a deficient number, since it is larger than the sum of its proper divisors (1).

71096639 is an equidigital number, since it uses as much as digits as its factorization.

71096639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 71096639 is about 8431.8822928217. The cubic root of 71096639 is about 414.2695604199.

The spelling of 71096639 in words is "seventy-one million, ninety-six thousand, six hundred thirty-nine".