98622581 has 2 divisors, whose sum is σ = 98622582. Its totient is φ = 98622580.

The previous prime is 98622569. The next prime is 98622599. The reversal of 98622581 is 18522689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 47141956 = 7175^2 + 6866^2 .

It is an emirp because it is prime and its reverse (18522689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98622581 - 2¹⁴ = 98606197 is a prime.

It is a super-2 number, since 2×98622581² = 19452826966203122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98622541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49311290 + 49311291.

It is an arithmetic number, because the mean of its divisors is an integer number (49311291).

Almost surely, 2^98622581 is an apocalyptic number.

It is an amenable number.

98622581 is a deficient number, since it is larger than the sum of its proper divisors (1).

98622581 is an equidigital number, since it uses as much as digits as its factorization.

98622581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 98622581 is about 9930.8902420679. The cubic root of 98622581 is about 462.0178853417.

The spelling of 98622581 in words is "ninety-eight million, six hundred twenty-two thousand, five hundred eighty-one".