71336580 has 96 divisors (see below), whose sum is σ = 235683840. Its totient is φ = 15776640.

The previous prime is 71336567. The next prime is 71336599. The reversal of 71336580 is 8563317.

It is a happy number.

71336580 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

71336580 is strictly pandigital in base 9.

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, 10281 + ... + 15759.

It is an arithmetic number, because the mean of its divisors is an integer number (2455040).

Almost surely, 2^71336580 is an apocalyptic number.

71336580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71336580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117841920).

71336580 is an abundant number, since it is smaller than the sum of its proper divisors (164347260).

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

71336580 is a wasteful number, since it uses less digits than its factorization.

71336580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 71336580 is about 8446.0985075951. The cubic root of 71336580 is about 414.7350706636.

Adding to 71336580 its reverse (8563317), we get a palindrome (79899897).

The spelling of 71336580 in words is "seventy-one million, three hundred thirty-six thousand, five hundred eighty".