71801843 has 2 divisors, whose sum is σ = 71801844. Its totient is φ = 71801842.

The previous prime is 71801839. The next prime is 71801869. The reversal of 71801843 is 34810817.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71801843 - 2² = 71801839 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71801833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35900921 + 35900922.

It is an arithmetic number, because the mean of its divisors is an integer number (35900922).

Almost surely, 2^71801843 is an apocalyptic number.

71801843 is a deficient number, since it is larger than the sum of its proper divisors (1).

71801843 is an equidigital number, since it uses as much as digits as its factorization.

71801843 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 71801843 is about 8473.5968159926. The cubic root of 71801843 is about 415.6347628664.

The spelling of 71801843 in words is "seventy-one million, eight hundred one thousand, eight hundred forty-three".