71800697 has 2 divisors, whose sum is σ = 71800698. Its totient is φ = 71800696.

The previous prime is 71800679. The next prime is 71800739. The reversal of 71800697 is 79600817.

It is a happy number.

Together with previous prime (71800679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71554681 + 246016 = 8459^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 71800697 - 2⁸ = 71800441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71800697.

It is not a weakly prime, because it can be changed into another prime (71800657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35900348 + 35900349.

It is an arithmetic number, because the mean of its divisors is an integer number (35900349).

Almost surely, 2^71800697 is an apocalyptic number.

It is an amenable number.

71800697 is a deficient number, since it is larger than the sum of its proper divisors (1).

71800697 is an equidigital number, since it uses as much as digits as its factorization.

71800697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 71800697 is about 8473.5291939073. The cubic root of 71800697 is about 415.6325515955.

The spelling of 71800697 in words is "seventy-one million, eight hundred thousand, six hundred ninety-seven".