71217007 has 8 divisors (see below), whose sum is σ = 72282384. Its totient is φ = 70159488.

The previous prime is 71216989. The next prime is 71217031. The reversal of 71217007 is 70071217.

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 71217007 - 2¹¹ = 71214959 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 (71217037) 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, 17728 + ... + 21370.

It is an arithmetic number, because the mean of its divisors is an integer number (9035298).

Almost surely, 2^71217007 is an apocalyptic number.

71217007 is a deficient number, since it is larger than the sum of its proper divisors (1065377).

71217007 is a wasteful number, since it uses less digits than its factorization.

71217007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929.

The product of its (nonzero) digits is 686, while the sum is 25.

The square root of 71217007 is about 8439.0169451187. The cubic root of 71217007 is about 414.5032174296.

The spelling of 71217007 in words is "seventy-one million, two hundred seventeen thousand, seven".