88198217 has 2 divisors, whose sum is σ = 88198218. Its totient is φ = 88198216.

The previous prime is 88198213. The next prime is 88198219. The reversal of 88198217 is 71289188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68873401 + 19324816 = 8299^2 + 4396^2 .

It is a cyclic number.

It is not a de Polignac number, because 88198217 - 2² = 88198213 is a prime.

Together with 88198219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88198213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44099108 + 44099109.

It is an arithmetic number, because the mean of its divisors is an integer number (44099109).

Almost surely, 2^88198217 is an apocalyptic number.

It is an amenable number.

88198217 is a deficient number, since it is larger than the sum of its proper divisors (1).

88198217 is an equidigital number, since it uses as much as digits as its factorization.

88198217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 44.

The square root of 88198217 is about 9391.3905786098. The cubic root of 88198217 is about 445.1297303031.

The spelling of 88198217 in words is "eighty-eight million, one hundred ninety-eight thousand, two hundred seventeen".