75720075 has 12 divisors (see below), whose sum is σ = 125190648. Its totient is φ = 40384000.

The previous prime is 75720061. The next prime is 75720077. The reversal of 75720075 is 57002757.

It is not a de Polignac number, because 75720075 - 2⁴ = 75720059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75720077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504726 + ... + 504875.

It is an arithmetic number, because the mean of its divisors is an integer number (10432554).

Almost surely, 2^75720075 is an apocalyptic number.

75720075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

75720075 is a deficient number, since it is larger than the sum of its proper divisors (49470573).

75720075 is a wasteful number, since it uses less digits than its factorization.

75720075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009614 (or 1009609 counting only the distinct ones).

The product of its (nonzero) digits is 17150, while the sum is 33.

The square root of 75720075 is about 8701.7282766126. The cubic root of 75720075 is about 423.0616691046.

The spelling of 75720075 in words is "seventy-five million, seven hundred twenty thousand, seventy-five".