71437013 has 2 divisors, whose sum is σ = 71437014. Its totient is φ = 71437012.

The previous prime is 71436991. The next prime is 71437027. The reversal of 71437013 is 31073417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71199844 + 237169 = 8438^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 71437013 - 2²⁴ = 54659797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71437073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35718506 + 35718507.

It is an arithmetic number, because the mean of its divisors is an integer number (35718507).

Almost surely, 2^71437013 is an apocalyptic number.

It is an amenable number.

71437013 is a deficient number, since it is larger than the sum of its proper divisors (1).

71437013 is an equidigital number, since it uses as much as digits as its factorization.

71437013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 71437013 is about 8452.0419426314. The cubic root of 71437013 is about 414.9296111325.

The spelling of 71437013 in words is "seventy-one million, four hundred thirty-seven thousand, thirteen".