73216771 has 2 divisors, whose sum is σ = 73216772. Its totient is φ = 73216770.

The previous prime is 73216769. The next prime is 73216777. The reversal of 73216771 is 17761237.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73216771 - 2¹ = 73216769 is a prime.

Together with 73216769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73216777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36608385 + 36608386.

It is an arithmetic number, because the mean of its divisors is an integer number (36608386).

Almost surely, 2^73216771 is an apocalyptic number.

73216771 is a deficient number, since it is larger than the sum of its proper divisors (1).

73216771 is an equidigital number, since it uses as much as digits as its factorization.

73216771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 34.

The square root of 73216771 is about 8556.6799051969. The cubic root of 73216771 is about 418.3471909965.

The spelling of 73216771 in words is "seventy-three million, two hundred sixteen thousand, seven hundred seventy-one".