71622137 has 2 divisors, whose sum is σ = 71622138. Its totient is φ = 71622136.

The previous prime is 71622079. The next prime is 71622151. The reversal of 71622137 is 73122617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58690921 + 12931216 = 7661^2 + 3596^2 .

It is a cyclic number.

It is not a de Polignac number, because 71622137 - 2⁶ = 71622073 is a prime.

It is not a weakly prime, because it can be changed into another prime (71622157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35811068 + 35811069.

It is an arithmetic number, because the mean of its divisors is an integer number (35811069).

Almost surely, 2^71622137 is an apocalyptic number.

It is an amenable number.

71622137 is a deficient number, since it is larger than the sum of its proper divisors (1).

71622137 is an equidigital number, since it uses as much as digits as its factorization.

71622137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 71622137 is about 8462.9862932655. The cubic root of 71622137 is about 415.2877222818.

The spelling of 71622137 in words is "seventy-one million, six hundred twenty-two thousand, one hundred thirty-seven".