72865723 has 8 divisors (see below), whose sum is σ = 88173792. Its totient is φ = 58782336.

The previous prime is 72865711. The next prime is 72865747. The reversal of 72865723 is 32756827.

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 72865723 - 2⁹ = 72865211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72865763) 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, 306040 + ... + 306277.

It is an arithmetic number, because the mean of its divisors is an integer number (11021724).

Almost surely, 2^72865723 is an apocalyptic number.

72865723 is a deficient number, since it is larger than the sum of its proper divisors (15308069).

72865723 is a wasteful number, since it uses less digits than its factorization.

72865723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612341.

The product of its digits is 141120, while the sum is 40.

The square root of 72865723 is about 8536.1421614216. The cubic root of 72865723 is about 417.6775116166.

The spelling of 72865723 in words is "seventy-two million, eight hundred sixty-five thousand, seven hundred twenty-three".