75120717 has 16 divisors (see below), whose sum is σ = 115758720. Its totient is φ = 42442752.

The previous prime is 75120653. The next prime is 75120761. The reversal of 75120717 is 71702157.

It is not a de Polignac number, because 75120717 - 2⁶ = 75120653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75120517) 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 15 ways as a sum of consecutive naturals, for example, 18228 + ... + 21965.

It is an arithmetic number, because the mean of its divisors is an integer number (7234920).

Almost surely, 2^75120717 is an apocalyptic number.

It is an amenable number.

75120717 is a deficient number, since it is larger than the sum of its proper divisors (40638003).

75120717 is a wasteful number, since it uses less digits than its factorization.

75120717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40292.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 75120717 is about 8667.2208348467. The cubic root of 75120717 is about 421.9424706135.

The spelling of 75120717 in words is "seventy-five million, one hundred twenty thousand, seven hundred seventeen".