71745560 has 16 divisors (see below), whose sum is σ = 161427600. Its totient is φ = 28698208.

The previous prime is 71745551. The next prime is 71745581. The reversal of 71745560 is 6554717.

It is a self number, because there is not a number n which added to its sum of digits gives 71745560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896780 + ... + 896859.

It is an arithmetic number, because the mean of its divisors is an integer number (10089225).

Almost surely, 2^71745560 is an apocalyptic number.

It is an amenable number.

71745560 is an abundant number, since it is smaller than the sum of its proper divisors (89682040).

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

71745560 is a wasteful number, since it uses less digits than its factorization.

71745560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793650 (or 1793646 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 71745560 is about 8470.2750840808. The cubic root of 71745560 is about 415.5261338702.

The spelling of 71745560 in words is "seventy-one million, seven hundred forty-five thousand, five hundred sixty".