71341649 has 2 divisors, whose sum is σ = 71341650. Its totient is φ = 71341648.

The previous prime is 71341619. The next prime is 71341651. The reversal of 71341649 is 94614317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 1117249 = 8380^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 71341649 - 2⁸ = 71341393 is a prime.

Together with 71341651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71341619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35670824 + 35670825.

It is an arithmetic number, because the mean of its divisors is an integer number (35670825).

Almost surely, 2^71341649 is an apocalyptic number.

It is an amenable number.

71341649 is a deficient number, since it is larger than the sum of its proper divisors (1).

71341649 is an equidigital number, since it uses as much as digits as its factorization.

71341649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 71341649 is about 8446.3985816441. The cubic root of 71341649 is about 414.7448937785.

The spelling of 71341649 in words is "seventy-one million, three hundred forty-one thousand, six hundred forty-nine".