72684941 has 4 divisors (see below), whose sum is σ = 83068512. Its totient is φ = 62301372.

The previous prime is 72684929. The next prime is 72684947. The reversal of 72684941 is 14948627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14948627 = 17 ⋅879331.

It is a de Polignac number, because none of the positive numbers 2^k-72684941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72684947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5191775 + ... + 5191788.

It is an arithmetic number, because the mean of its divisors is an integer number (20767128).

Almost surely, 2^72684941 is an apocalyptic number.

It is an amenable number.

72684941 is a deficient number, since it is larger than the sum of its proper divisors (10383571).

72684941 is a wasteful number, since it uses less digits than its factorization.

72684941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10383570.

The product of its digits is 96768, while the sum is 41.

The square root of 72684941 is about 8525.5463754530. The cubic root of 72684941 is about 417.3318021603.

The spelling of 72684941 in words is "seventy-two million, six hundred eighty-four thousand, nine hundred forty-one".