71725680 has 240 divisors, whose sum is σ = 265399680. Its totient is φ = 17252352.

The previous prime is 71725679. The next prime is 71725681. The reversal of 71725680 is 8652717.

It is an interprime number because it is at equal distance from previous prime (71725679) and next prime (71725681).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71725681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 739392 + ... + 739488.

It is an arithmetic number, because the mean of its divisors is an integer number (1105832).

Almost surely, 2^71725680 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 71725680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132699840).

71725680 is an abundant number, since it is smaller than the sum of its proper divisors (193674000).

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

71725680 is a wasteful number, since it uses less digits than its factorization.

71725680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 71725680 is about 8469.1014871709. The cubic root of 71725680 is about 415.4877509020.

The spelling of 71725680 in words is "seventy-one million, seven hundred twenty-five thousand, six hundred eighty".