89717513 has 2 divisors, whose sum is σ = 89717514. Its totient is φ = 89717512.

The previous prime is 89717477. The next prime is 89717581. The reversal of 89717513 is 31571798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50879689 + 38837824 = 7133^2 + 6232^2 .

It is a cyclic number.

It is not a de Polignac number, because 89717513 - 2¹² = 89713417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89717713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44858756 + 44858757.

It is an arithmetic number, because the mean of its divisors is an integer number (44858757).

Almost surely, 2^89717513 is an apocalyptic number.

It is an amenable number.

89717513 is a deficient number, since it is larger than the sum of its proper divisors (1).

89717513 is an equidigital number, since it uses as much as digits as its factorization.

89717513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 41.

The square root of 89717513 is about 9471.9329072793. The cubic root of 89717513 is about 447.6711171065.

The spelling of 89717513 in words is "eighty-nine million, seven hundred seventeen thousand, five hundred thirteen".