71158864 has 20 divisors (see below), whose sum is σ = 157566304. Its totient is φ = 30496608.

The previous prime is 71158861. The next prime is 71158877. The reversal of 71158864 is 46885117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71158861) 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, 317562 + ... + 317785.

Almost surely, 2^71158864 is an apocalyptic number.

It is an amenable number.

71158864 is an abundant number, since it is smaller than the sum of its proper divisors (86407440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71158864 is a wasteful number, since it uses less digits than its factorization.

71158864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635362 (or 635356 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 71158864 is about 8435.5713499442. The cubic root of 71158864 is about 414.3903837902.

The spelling of 71158864 in words is "seventy-one million, one hundred fifty-eight thousand, eight hundred sixty-four".