71723568 has 80 divisors (see below), whose sum is σ = 220985856. Its totient is φ = 19599360.

The previous prime is 71723557. The next prime is 71723569. The reversal of 71723568 is 86532717.

It is not an unprimeable number, because it can be changed into a prime (71723569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3088 + ... + 12368.

Almost surely, 2^71723568 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 71723568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110492928).

71723568 is an abundant number, since it is smaller than the sum of its proper divisors (149262288).

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

71723568 is a wasteful number, since it uses less digits than its factorization.

71723568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322 (or 9316 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 71723568 is about 8468.9767977011. The cubic root of 71723568 is about 415.4836727776.

The spelling of 71723568 in words is "seventy-one million, seven hundred twenty-three thousand, five hundred sixty-eight".