72708717 has 8 divisors (see below), whose sum is σ = 97314624. Its totient is φ = 48287648.

The previous prime is 72708683. The next prime is 72708719. The reversal of 72708717 is 71780727.

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 72708717 - 2⁶ = 72708653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72708719) 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, 45288 + ... + 46865.

It is an arithmetic number, because the mean of its divisors is an integer number (12164328).

Almost surely, 2^72708717 is an apocalyptic number.

It is an amenable number.

72708717 is a deficient number, since it is larger than the sum of its proper divisors (24605907).

72708717 is a wasteful number, since it uses less digits than its factorization.

72708717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92419.

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 72708717 is about 8526.9406588764. The cubic root of 72708717 is about 417.3773017235.

The spelling of 72708717 in words is "seventy-two million, seven hundred eight thousand, seven hundred seventeen".