71803841 has 2 divisors, whose sum is σ = 71803842. Its totient is φ = 71803840.

The previous prime is 71803819. The next prime is 71803847. The reversal of 71803841 is 14830817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70492816 + 1311025 = 8396^2 + 1145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71803841 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71803798 and 71803807.

It is not a weakly prime, because it can be changed into another prime (71803847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35901920 + 35901921.

It is an arithmetic number, because the mean of its divisors is an integer number (35901921).

Almost surely, 2^71803841 is an apocalyptic number.

It is an amenable number.

71803841 is a deficient number, since it is larger than the sum of its proper divisors (1).

71803841 is an equidigital number, since it uses as much as digits as its factorization.

71803841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 71803841 is about 8473.7147107983. The cubic root of 71803841 is about 415.6386180625.

The spelling of 71803841 in words is "seventy-one million, eight hundred three thousand, eight hundred forty-one".