71333641 has 2 divisors, whose sum is σ = 71333642. Its totient is φ = 71333640.

The previous prime is 71333597. The next prime is 71333651. The reversal of 71333641 is 14633317.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66585600 + 4748041 = 8160^2 + 2179^2 .

It is an emirp because it is prime and its reverse (14633317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71333641 - 2¹¹ = 71331593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71333651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35666820 + 35666821.

It is an arithmetic number, because the mean of its divisors is an integer number (35666821).

Almost surely, 2^71333641 is an apocalyptic number.

It is an amenable number.

71333641 is a deficient number, since it is larger than the sum of its proper divisors (1).

71333641 is an equidigital number, since it uses as much as digits as its factorization.

71333641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 71333641 is about 8445.9245201458. The cubic root of 71333641 is about 414.7293750204.

Adding to 71333641 its reverse (14633317), we get a palindrome (85966958).

The spelling of 71333641 in words is "seventy-one million, three hundred thirty-three thousand, six hundred forty-one".