72893563 has 4 divisors (see below), whose sum is σ = 73050120. Its totient is φ = 72737008.

The previous prime is 72893549. The next prime is 72893593. The reversal of 72893563 is 36539827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36539827 = 251 ⋅145577.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72893563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72893503) 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, 77578 + ... + 78511.

It is an arithmetic number, because the mean of its divisors is an integer number (18262530).

Almost surely, 2^72893563 is an apocalyptic number.

72893563 is a deficient number, since it is larger than the sum of its proper divisors (156557).

72893563 is a wasteful number, since it uses less digits than its factorization.

72893563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156556.

The product of its digits is 272160, while the sum is 43.

The square root of 72893563 is about 8537.7727189238. The cubic root of 72893563 is about 417.7306992281.

The spelling of 72893563 in words is "seventy-two million, eight hundred ninety-three thousand, five hundred sixty-three".