71693580 has 96 divisors (see below), whose sum is σ = 230791680. Its totient is φ = 16289280.

The previous prime is 71693563. The next prime is 71693603. The reversal of 71693580 is 8539617.

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, 88216 + ... + 89024.

It is an arithmetic number, because the mean of its divisors is an integer number (2404080).

Almost surely, 2^71693580 is an apocalyptic number.

71693580 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 71693580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115395840).

71693580 is an abundant number, since it is smaller than the sum of its proper divisors (159098100).

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

71693580 is a wasteful number, since it uses less digits than its factorization.

71693580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 71693580 is about 8467.2061507914. The cubic root of 71693580 is about 415.4257594045.

The spelling of 71693580 in words is "seventy-one million, six hundred ninety-three thousand, five hundred eighty".