71144629 has 2 divisors, whose sum is σ = 71144630. Its totient is φ = 71144628.

The previous prime is 71144617. The next prime is 71144639. The reversal of 71144629 is 92644117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70140625 + 1004004 = 8375^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 71144629 - 2²¹ = 69047477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71144594 and 71144603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71144639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35572314 + 35572315.

It is an arithmetic number, because the mean of its divisors is an integer number (35572315).

Almost surely, 2^71144629 is an apocalyptic number.

It is an amenable number.

71144629 is a deficient number, since it is larger than the sum of its proper divisors (1).

71144629 is an equidigital number, since it uses as much as digits as its factorization.

71144629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 71144629 is about 8434.7275593228. The cubic root of 71144629 is about 414.3627496574.

The spelling of 71144629 in words is "seventy-one million, one hundred forty-four thousand, six hundred twenty-nine".