71707049 has 2 divisors, whose sum is σ = 71707050. Its totient is φ = 71707048.

The previous prime is 71707043. The next prime is 71707079. The reversal of 71707049 is 94070717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71707024 + 25 = 8468^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71707049 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (71707043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35853524 + 35853525.

It is an arithmetic number, because the mean of its divisors is an integer number (35853525).

Almost surely, 2^71707049 is an apocalyptic number.

It is an amenable number.

71707049 is a deficient number, since it is larger than the sum of its proper divisors (1).

71707049 is an equidigital number, since it uses as much as digits as its factorization.

71707049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 71707049 is about 8468.0014761454. The cubic root of 71707049 is about 415.4517729806.

The spelling of 71707049 in words is "seventy-one million, seven hundred seven thousand, forty-nine".