73436591 has 2 divisors, whose sum is σ = 73436592. Its totient is φ = 73436590.

The previous prime is 73436579. The next prime is 73436599. The reversal of 73436591 is 19563437.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73436591 - 2¹⁸ = 73174447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73436599) 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, 36718295 + 36718296.

It is an arithmetic number, because the mean of its divisors is an integer number (36718296).

Almost surely, 2^73436591 is an apocalyptic number.

73436591 is a deficient number, since it is larger than the sum of its proper divisors (1).

73436591 is an equidigital number, since it uses as much as digits as its factorization.

73436591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 73436591 is about 8569.5152138263. The cubic root of 73436591 is about 418.7654430779.

The spelling of 73436591 in words is "seventy-three million, four hundred thirty-six thousand, five hundred ninety-one".