71630871 has 8 divisors (see below), whose sum is σ = 102854640. Its totient is φ = 44080512.

The previous prime is 71630851. The next prime is 71630873. The reversal of 71630871 is 17803617.

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

It is not a de Polignac number, because 71630871 - 2⁶ = 71630807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71630873) 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, 918306 + ... + 918383.

It is an arithmetic number, because the mean of its divisors is an integer number (12856830).

Almost surely, 2^71630871 is an apocalyptic number.

71630871 is a deficient number, since it is larger than the sum of its proper divisors (31223769).

71630871 is a wasteful number, since it uses less digits than its factorization.

71630871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836705.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 71630871 is about 8463.5022892417. The cubic root of 71630871 is about 415.3046024239.

The spelling of 71630871 in words is "seventy-one million, six hundred thirty thousand, eight hundred seventy-one".