71025671 has 4 divisors (see below), whose sum is σ = 72365832. Its totient is φ = 69685512.

The previous prime is 71025613. The next prime is 71025683. The reversal of 71025671 is 17652017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71025671 - 2¹⁴ = 71009287 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 (71025271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670001 + ... + 670106.

It is an arithmetic number, because the mean of its divisors is an integer number (18091458).

Almost surely, 2^71025671 is an apocalyptic number.

71025671 is a deficient number, since it is larger than the sum of its proper divisors (1340161).

71025671 is a wasteful number, since it uses less digits than its factorization.

71025671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340160.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 71025671 is about 8427.6729291068. The cubic root of 71025671 is about 414.1316745309.

Adding to 71025671 its reverse (17652017), we get a palindrome (88677688).

The spelling of 71025671 in words is "seventy-one million, twenty-five thousand, six hundred seventy-one".