71485887 has 32 divisors (see below), whose sum is σ = 107864064. Its totient is φ = 41731200.

The previous prime is 71485873. The next prime is 71485891. The reversal of 71485887 is 78858417.

It is not a de Polignac number, because 71485887 - 2⁷ = 71485759 is a prime.

It is a super-2 number, since 2×71485887² = 10220464080353538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71485807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154837 + ... + 155297.

It is an arithmetic number, because the mean of its divisors is an integer number (3370752).

Almost surely, 2^71485887 is an apocalyptic number.

71485887 is a deficient number, since it is larger than the sum of its proper divisors (36378177).

71485887 is a wasteful number, since it uses less digits than its factorization.

71485887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 501760, while the sum is 48.

The square root of 71485887 is about 8454.9327022750. The cubic root of 71485887 is about 415.0242149707.

The spelling of 71485887 in words is "seventy-one million, four hundred eighty-five thousand, eight hundred eighty-seven".