71340757 has 2 divisors, whose sum is σ = 71340758. Its totient is φ = 71340756.

The previous prime is 71340749. The next prime is 71340767. The reversal of 71340757 is 75704317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69072721 + 2268036 = 8311^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 71340757 - 2³ = 71340749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71340727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35670378 + 35670379.

It is an arithmetic number, because the mean of its divisors is an integer number (35670379).

Almost surely, 2^71340757 is an apocalyptic number.

71340757 is the 4877-th hex number.

It is an amenable number.

71340757 is a deficient number, since it is larger than the sum of its proper divisors (1).

71340757 is an equidigital number, since it uses as much as digits as its factorization.

71340757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 71340757 is about 8446.3457779089. The cubic root of 71340757 is about 414.7431652231.

The spelling of 71340757 in words is "seventy-one million, three hundred forty thousand, seven hundred fifty-seven".