71685080 has 32 divisors (see below), whose sum is σ = 162464400. Its totient is φ = 28465536.

The previous prime is 71685077. The next prime is 71685083. The reversal of 71685080 is 8058617.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71685077) and next prime (71685083).

It is a self number, because there is not a number n which added to its sum of digits gives 71685080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71685083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887 + ... + 12006.

Almost surely, 2^71685080 is an apocalyptic number.

It is an amenable number.

71685080 is an abundant number, since it is smaller than the sum of its proper divisors (90779320).

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

71685080 is a wasteful number, since it uses less digits than its factorization.

71685080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043 (or 13039 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 71685080 is about 8466.7041993919. The cubic root of 71685080 is about 415.4093411120.

The spelling of 71685080 in words is "seventy-one million, six hundred eighty-five thousand, eighty".