75720023 has 6 divisors (see below), whose sum is σ = 80436456. Its totient is φ = 71265632.

The previous prime is 75720013. The next prime is 75720059. The reversal of 75720023 is 32002757.

It is not a de Polignac number, because 75720023 - 2¹⁶ = 75654487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75719974 and 75720001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75720013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130715 + ... + 131292.

It is an arithmetic number, because the mean of its divisors is an integer number (13406076).

Almost surely, 2^75720023 is an apocalyptic number.

75720023 is a deficient number, since it is larger than the sum of its proper divisors (4716433).

75720023 is a wasteful number, since it uses less digits than its factorization.

75720023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262041 (or 262024 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 75720023 is about 8701.7252886999. The cubic root of 75720023 is about 423.0615722601.

The spelling of 75720023 in words is "seventy-five million, seven hundred twenty thousand, twenty-three".