71970347 has 16 divisors (see below), whose sum is σ = 78207360. Its totient is φ = 66007872.

The previous prime is 71970337. The next prime is 71970359. The reversal of 71970347 is 74307917.

It is a cyclic number.

It is not a de Polignac number, because 71970347 - 2⁴ = 71970331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71970347.

It is not an unprimeable number, because it can be changed into a prime (71970307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111608 + ... + 112250.

It is an arithmetic number, because the mean of its divisors is an integer number (4887960).

Almost surely, 2^71970347 is an apocalyptic number.

71970347 is a deficient number, since it is larger than the sum of its proper divisors (6237013).

71970347 is a wasteful number, since it uses less digits than its factorization.

71970347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 71970347 is about 8483.5338745124. The cubic root of 71970347 is about 415.9596449852.

The spelling of 71970347 in words is "seventy-one million, nine hundred seventy thousand, three hundred forty-seven".