71493629 has 2 divisors, whose sum is σ = 71493630. Its totient is φ = 71493628.

The previous prime is 71493607. The next prime is 71493659. The reversal of 71493629 is 92639417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58171129 + 13322500 = 7627^2 + 3650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71493629 is a prime.

It is a super-2 number, since 2×71493629² = 10222677975179282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71493659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35746814 + 35746815.

It is an arithmetic number, because the mean of its divisors is an integer number (35746815).

Almost surely, 2^71493629 is an apocalyptic number.

It is an amenable number.

71493629 is a deficient number, since it is larger than the sum of its proper divisors (1).

71493629 is an equidigital number, since it uses as much as digits as its factorization.

71493629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 71493629 is about 8455.3905291240. The cubic root of 71493629 is about 415.0391969558.

The spelling of 71493629 in words is "seventy-one million, four hundred ninety-three thousand, six hundred twenty-nine".