71283733 has 2 divisors, whose sum is σ = 71283734. Its totient is φ = 71283732.

The previous prime is 71283731. The next prime is 71283757. The reversal of 71283733 is 33738217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 7171684 = 8007^2 + 2678^2 .

It is a cyclic number.

It is not a de Polignac number, because 71283733 - 2¹ = 71283731 is a prime.

Together with 71283731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71283731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35641866 + 35641867.

It is an arithmetic number, because the mean of its divisors is an integer number (35641867).

Almost surely, 2^71283733 is an apocalyptic number.

It is an amenable number.

71283733 is a deficient number, since it is larger than the sum of its proper divisors (1).

71283733 is an equidigital number, since it uses as much as digits as its factorization.

71283733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 71283733 is about 8442.9694420861. The cubic root of 71283733 is about 414.6326317804.

The spelling of 71283733 in words is "seventy-one million, two hundred eighty-three thousand, seven hundred thirty-three".