71767273 has 2 divisors, whose sum is σ = 71767274. Its totient is φ = 71767272.

The previous prime is 71767271. The next prime is 71767279. The reversal of 71767273 is 37276717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39538944 + 32228329 = 6288^2 + 5677^2 .

It is a cyclic number.

It is not a de Polignac number, because 71767273 - 2¹ = 71767271 is a prime.

Together with 71767271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71767271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35883636 + 35883637.

It is an arithmetic number, because the mean of its divisors is an integer number (35883637).

Almost surely, 2^71767273 is an apocalyptic number.

It is an amenable number.

71767273 is a deficient number, since it is larger than the sum of its proper divisors (1).

71767273 is an equidigital number, since it uses as much as digits as its factorization.

71767273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86436, while the sum is 40.

The square root of 71767273 is about 8471.5567046441. The cubic root of 71767273 is about 415.5680477713.

The spelling of 71767273 in words is "seventy-one million, seven hundred sixty-seven thousand, two hundred seventy-three".