75720723 has 8 divisors (see below), whose sum is σ = 108727248. Its totient is φ = 46597344.

The previous prime is 75720709. The next prime is 75720739. The reversal of 75720723 is 32702757.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75720723 - 2⁵ = 75720691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75720773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970740 + ... + 970817.

It is an arithmetic number, because the mean of its divisors is an integer number (13590906).

Almost surely, 2^75720723 is an apocalyptic number.

75720723 is a deficient number, since it is larger than the sum of its proper divisors (33006525).

75720723 is a wasteful number, since it uses less digits than its factorization.

75720723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941573.

The product of its (nonzero) digits is 20580, while the sum is 33.

The square root of 75720723 is about 8701.7655105157. The cubic root of 75720723 is about 423.0628759320.

The spelling of 75720723 in words is "seventy-five million, seven hundred twenty thousand, seven hundred twenty-three".