71285207 has 16 divisors (see below), whose sum is σ = 86976000. Its totient is φ = 57062880.

The previous prime is 71285189. The next prime is 71285209. The reversal of 71285207 is 70258217.

It is not a de Polignac number, because 71285207 - 2⁶ = 71285143 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 (71285209) 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, 5669 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (5436000).

Almost surely, 2^71285207 is an apocalyptic number.

71285207 is a deficient number, since it is larger than the sum of its proper divisors (15690793).

71285207 is a wasteful number, since it uses less digits than its factorization.

71285207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 71285207 is about 8443.0567331980. The cubic root of 71285207 is about 414.6354896754.

The spelling of 71285207 in words is "seventy-one million, two hundred eighty-five thousand, two hundred seven".