72859163 has 8 divisors (see below), whose sum is σ = 78757056. Its totient is φ = 67003200.

The previous prime is 72859151. The next prime is 72859169. The reversal of 72859163 is 36195827.

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 72859163 - 2⁶ = 72859099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72859163.

It is not an unprimeable number, because it can be changed into a prime (72859169) 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, 6818 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (9844632).

Almost surely, 2^72859163 is an apocalyptic number.

72859163 is a deficient number, since it is larger than the sum of its proper divisors (5897893).

72859163 is a wasteful number, since it uses less digits than its factorization.

72859163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20965.

The product of its digits is 90720, while the sum is 41.

The square root of 72859163 is about 8535.7579042520. The cubic root of 72859163 is about 417.6649769314.

The spelling of 72859163 in words is "seventy-two million, eight hundred fifty-nine thousand, one hundred sixty-three".