73716589 has 2 divisors, whose sum is σ = 73716590. Its totient is φ = 73716588.

The previous prime is 73716581. The next prime is 73716593. The reversal of 73716589 is 98561737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71267364 + 2449225 = 8442^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 73716589 - 2³ = 73716581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73716581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36858294 + 36858295.

It is an arithmetic number, because the mean of its divisors is an integer number (36858295).

Almost surely, 2^73716589 is an apocalyptic number.

It is an amenable number.

73716589 is a deficient number, since it is larger than the sum of its proper divisors (1).

73716589 is an equidigital number, since it uses as much as digits as its factorization.

73716589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 73716589 is about 8585.8365346657. The cubic root of 73716589 is about 419.2969890869.

It can be divided in two parts, 73716 and 589, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 73716589 in words is "seventy-three million, seven hundred sixteen thousand, five hundred eighty-nine".