75700720 has 40 divisors (see below), whose sum is σ = 177314544. Its totient is φ = 30054912.

The previous prime is 75700673. The next prime is 75700727. The reversal of 75700720 is 2700757.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75700727) 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 7 ways as a sum of consecutive naturals, for example, 7507 + ... + 14413.

Almost surely, 2^75700720 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 75700720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88657272).

75700720 is an abundant number, since it is smaller than the sum of its proper divisors (101613824).

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

75700720 is a wasteful number, since it uses less digits than its factorization.

75700720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7057 (or 7051 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 75700720 is about 8700.6160701412. The cubic root of 75700720 is about 423.0256194116.

The spelling of 75700720 in words is "seventy-five million, seven hundred thousand, seven hundred twenty".