71180069 has 2 divisors, whose sum is σ = 71180070. Its totient is φ = 71180068.

The previous prime is 71179991. The next prime is 71180089. The reversal of 71180069 is 96008117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 23639044 = 6895^2 + 4862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71180069 is a prime.

It is a super-2 number, since 2×71180069² = 10133204445689522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71180089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35590034 + 35590035.

It is an arithmetic number, because the mean of its divisors is an integer number (35590035).

Almost surely, 2^71180069 is an apocalyptic number.

It is an amenable number.

71180069 is a deficient number, since it is larger than the sum of its proper divisors (1).

71180069 is an equidigital number, since it uses as much as digits as its factorization.

71180069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 71180069 is about 8436.8281362133. The cubic root of 71180069 is about 414.4315418175.

The spelling of 71180069 in words is "seventy-one million, one hundred eighty thousand, sixty-nine".