71773061 has 2 divisors, whose sum is σ = 71773062. Its totient is φ = 71773060.

The previous prime is 71773049. The next prime is 71773069. The reversal of 71773061 is 16037717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65044225 + 6728836 = 8065^2 + 2594^2 .

It is an emirp because it is prime and its reverse (16037717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71773061 - 2²⁶ = 4664197 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 (71773069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35886530 + 35886531.

It is an arithmetic number, because the mean of its divisors is an integer number (35886531).

Almost surely, 2^71773061 is an apocalyptic number.

It is an amenable number.

71773061 is a deficient number, since it is larger than the sum of its proper divisors (1).

71773061 is an equidigital number, since it uses as much as digits as its factorization.

71773061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 71773061 is about 8471.8983114766. The cubic root of 71773061 is about 415.5792192664.

The spelling of 71773061 in words is "seventy-one million, seven hundred seventy-three thousand, sixty-one".