89667161 has 2 divisors, whose sum is σ = 89667162. Its totient is φ = 89667160.

The previous prime is 89667139. The next prime is 89667191. The reversal of 89667161 is 16176698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 175561 = 9460^2 + 419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89667161 is a prime.

It is not a weakly prime, because it can be changed into another prime (89667121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44833580 + 44833581.

It is an arithmetic number, because the mean of its divisors is an integer number (44833581).

Almost surely, 2^89667161 is an apocalyptic number.

It is an amenable number.

89667161 is a deficient number, since it is larger than the sum of its proper divisors (1).

89667161 is an equidigital number, since it uses as much as digits as its factorization.

89667161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 44.

The square root of 89667161 is about 9469.2745762281. The cubic root of 89667161 is about 447.5873528797.

The spelling of 89667161 in words is "eighty-nine million, six hundred sixty-seven thousand, one hundred sixty-one".