72512723 has 8 divisors (see below), whose sum is σ = 74980080. Its totient is φ = 70078720.

The previous prime is 72512707. The next prime is 72512743. The reversal of 72512723 is 32721527.

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

It is a cyclic number.

It is not a de Polignac number, because 72512723 - 2⁴ = 72512707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72512743) 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 7 ways as a sum of consecutive naturals, for example, 3878 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (9372510).

Almost surely, 2^72512723 is an apocalyptic number.

72512723 is a deficient number, since it is larger than the sum of its proper divisors (2467357).

72512723 is a wasteful number, since it uses less digits than its factorization.

72512723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16677.

The product of its digits is 5880, while the sum is 29.

The square root of 72512723 is about 8515.4402704734. The cubic root of 72512723 is about 417.0019360920.

The spelling of 72512723 in words is "seventy-two million, five hundred twelve thousand, seven hundred twenty-three".