89620081 has 2 divisors, whose sum is σ = 89620082. Its totient is φ = 89620080.

The previous prime is 89620067. The next prime is 89620087. The reversal of 89620081 is 18002698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89586225 + 33856 = 9465^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 89620081 - 2⁷ = 89619953 is a prime.

It is a super-2 number, since 2×89620081² = 16063517836893122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89620087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44810040 + 44810041.

It is an arithmetic number, because the mean of its divisors is an integer number (44810041).

Almost surely, 2^89620081 is an apocalyptic number.

It is an amenable number.

89620081 is a deficient number, since it is larger than the sum of its proper divisors (1).

89620081 is an equidigital number, since it uses as much as digits as its factorization.

89620081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 89620081 is about 9466.7883149461. The cubic root of 89620081 is about 447.5090034912.

The spelling of 89620081 in words is "eighty-nine million, six hundred twenty thousand, eighty-one".