71300077 has 4 divisors (see below), whose sum is σ = 71557756. Its totient is φ = 71042400.

The previous prime is 71300059. The next prime is 71300083. The reversal of 71300077 is 77000317.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39614436 + 31685641 = 6294^2 + 5629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71300077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71300017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128424 + ... + 128977.

It is an arithmetic number, because the mean of its divisors is an integer number (17889439).

Almost surely, 2^71300077 is an apocalyptic number.

It is an amenable number.

71300077 is a deficient number, since it is larger than the sum of its proper divisors (257679).

71300077 is a wasteful number, since it uses less digits than its factorization.

71300077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257678.

The product of its (nonzero) digits is 1029, while the sum is 25.

The square root of 71300077 is about 8443.9372925194. The cubic root of 71300077 is about 414.6643184761.

The spelling of 71300077 in words is "seventy-one million, three hundred thousand, seventy-seven".