89680961 has 2 divisors, whose sum is σ = 89680962. Its totient is φ = 89680960.

The previous prime is 89680957. The next prime is 89680973. The reversal of 89680961 is 16908698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87534736 + 2146225 = 9356^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 89680961 - 2² = 89680957 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89680991) 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, 44840480 + 44840481.

It is an arithmetic number, because the mean of its divisors is an integer number (44840481).

Almost surely, 2^89680961 is an apocalyptic number.

It is an amenable number.

89680961 is a deficient number, since it is larger than the sum of its proper divisors (1).

89680961 is an equidigital number, since it uses as much as digits as its factorization.

89680961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 89680961 is about 9470.0032206964. The cubic root of 89680961 is about 447.6103133056.

The spelling of 89680961 in words is "eighty-nine million, six hundred eighty thousand, nine hundred sixty-one".