75005720 has 16 divisors (see below), whose sum is σ = 168762960. Its totient is φ = 30002272.

The previous prime is 75005713. The next prime is 75005743. The reversal of 75005720 is 2750057.

It is a self number, because there is not a number n which added to its sum of digits gives 75005720.

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, 937532 + ... + 937611.

It is an arithmetic number, because the mean of its divisors is an integer number (10547685).

Almost surely, 2^75005720 is an apocalyptic number.

It is an amenable number.

75005720 is an abundant number, since it is smaller than the sum of its proper divisors (93757240).

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

75005720 is a wasteful number, since it uses less digits than its factorization.

75005720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875154 (or 1875150 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 75005720 is about 8660.5842759019. The cubic root of 75005720 is about 421.7270533447.

Adding to 75005720 its reverse (2750057), we get a palindrome (77755777).

The spelling of 75005720 in words is "seventy-five million, five thousand, seven hundred twenty".