72791693 has 8 divisors (see below), whose sum is σ = 78481536. Its totient is φ = 67114800.

The previous prime is 72791683. The next prime is 72791707. The reversal of 72791693 is 39619727.

It is a happy number.

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 72791693 - 2⁶ = 72791629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72791623) 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, 10688 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (9810192).

Almost surely, 2^72791693 is an apocalyptic number.

It is an amenable number.

72791693 is a deficient number, since it is larger than the sum of its proper divisors (5689843).

72791693 is a wasteful number, since it uses less digits than its factorization.

72791693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475.

The product of its digits is 142884, while the sum is 44.

The square root of 72791693 is about 8531.8047914846. The cubic root of 72791693 is about 417.5360132440.

The spelling of 72791693 in words is "seventy-two million, seven hundred ninety-one thousand, six hundred ninety-three".