89687573 has 2 divisors, whose sum is σ = 89687574. Its totient is φ = 89687572.

The previous prime is 89687567. The next prime is 89687617. The reversal of 89687573 is 37578698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77563249 + 12124324 = 8807^2 + 3482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89687573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89687513) 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, 44843786 + 44843787.

It is an arithmetic number, because the mean of its divisors is an integer number (44843787).

Almost surely, 2^89687573 is an apocalyptic number.

It is an amenable number.

89687573 is a deficient number, since it is larger than the sum of its proper divisors (1).

89687573 is an equidigital number, since it uses as much as digits as its factorization.

89687573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 53.

The square root of 89687573 is about 9470.3523165720. The cubic root of 89687573 is about 447.6213135099.

The spelling of 89687573 in words is "eighty-nine million, six hundred eighty-seven thousand, five hundred seventy-three".