73836991 has 2 divisors, whose sum is σ = 73836992. Its totient is φ = 73836990.

The previous prime is 73836949. The next prime is 73837039. The reversal of 73836991 is 19963837.

It is a weak prime.

It is an emirp because it is prime and its reverse (19963837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73836991 - 2¹⁹ = 73312703 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 (73836391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36918495 + 36918496.

It is an arithmetic number, because the mean of its divisors is an integer number (36918496).

Almost surely, 2^73836991 is an apocalyptic number.

73836991 is a deficient number, since it is larger than the sum of its proper divisors (1).

73836991 is an equidigital number, since it uses as much as digits as its factorization.

73836991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 73836991 is about 8592.8453378378. The cubic root of 73836991 is about 419.5251454907.

The spelling of 73836991 in words is "seventy-three million, eight hundred thirty-six thousand, nine hundred ninety-one".