71436641 has 2 divisors, whose sum is σ = 71436642. Its totient is φ = 71436640.

The previous prime is 71436613. The next prime is 71436647. The reversal of 71436641 is 14663417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 23425600 = 6929^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 71436641 - 2²⁶ = 4327777 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71436598 and 71436607.

It is not a weakly prime, because it can be changed into another prime (71436647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35718320 + 35718321.

It is an arithmetic number, because the mean of its divisors is an integer number (35718321).

Almost surely, 2^71436641 is an apocalyptic number.

It is an amenable number.

71436641 is a deficient number, since it is larger than the sum of its proper divisors (1).

71436641 is an equidigital number, since it uses as much as digits as its factorization.

71436641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 71436641 is about 8452.0199360863. The cubic root of 71436641 is about 414.9288908986.

The spelling of 71436641 in words is "seventy-one million, four hundred thirty-six thousand, six hundred forty-one".