71707086 has 64 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 21362400.

The previous prime is 71707079. The next prime is 71707109. The reversal of 71707086 is 68070717.

It is a super-3 number, since 3×71707086³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 71707086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35245 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (2762100).

Almost surely, 2^71707086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71707086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88387200).

71707086 is an abundant number, since it is smaller than the sum of its proper divisors (105067314).

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

71707086 is a wasteful number, since it uses less digits than its factorization.

71707086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 36.

The square root of 71707086 is about 8468.0036608400. The cubic root of 71707086 is about 415.4518444367.

The spelling of 71707086 in words is "seventy-one million, seven hundred seven thousand, eighty-six".