71744 has 28 divisors (see below), whose sum is σ = 152400. Its totient is φ = 33408.

The previous prime is 71741. The next prime is 71761. The reversal of 71744 is 44717.

It is not an unprimeable number, because it can be changed into a prime (71741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187 + ... + 1245.

2⁷¹⁷⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76200).

71744 is an abundant number, since it is smaller than the sum of its proper divisors (80656).

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

71744 is a wasteful number, since it uses less digits than its factorization.

71744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 80 counting only the distinct ones).

The product of its digits is 784, while the sum is 23.

The square root of 71744 is about 267.8507046845. The cubic root of 71744 is about 41.5523122183.

The spelling of 71744 in words is "seventy-one thousand, seven hundred forty-four", and thus it is an iban number.