71380917 has 12 divisors (see below), whose sum is σ = 103184640. Its totient is φ = 47550888.

The previous prime is 71380873. The next prime is 71380951. The reversal of 71380917 is 71908317.

It is not a de Polignac number, because 71380917 - 2¹² = 71376821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71380987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15084 + ... + 19242.

It is an arithmetic number, because the mean of its divisors is an integer number (8598720).

Almost surely, 2^71380917 is an apocalyptic number.

It is an amenable number.

71380917 is a deficient number, since it is larger than the sum of its proper divisors (31803723).

71380917 is a wasteful number, since it uses less digits than its factorization.

71380917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072 (or 6069 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 71380917 is about 8448.7228028857. The cubic root of 71380917 is about 414.8209747006.

The spelling of 71380917 in words is "seventy-one million, three hundred eighty thousand, nine hundred seventeen".