71397307 has 8 divisors (see below), whose sum is σ = 76574160. Its totient is φ = 66362400.

The previous prime is 71397301. The next prime is 71397311. The reversal of 71397307 is 70379317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71397307 - 2³ = 71397299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71397301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34444 + ... + 36457.

It is an arithmetic number, because the mean of its divisors is an integer number (9571770).

Almost surely, 2^71397307 is an apocalyptic number.

71397307 is a deficient number, since it is larger than the sum of its proper divisors (5176853).

71397307 is a wasteful number, since it uses less digits than its factorization.

71397307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70973.

The product of its (nonzero) digits is 27783, while the sum is 37.

The square root of 71397307 is about 8449.6927163063. The cubic root of 71397307 is about 414.8527217265.

The spelling of 71397307 in words is "seventy-one million, three hundred ninety-seven thousand, three hundred seven".