72589963 has 4 divisors (see below), whose sum is σ = 72681840. Its totient is φ = 72498088.

The previous prime is 72589961. The next prime is 72589973. The reversal of 72589963 is 36998527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36998527 = 103 ⋅359209.

It is a cyclic number.

It is not a de Polignac number, because 72589963 - 2¹ = 72589961 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72589961) 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, 44743 + ... + 46336.

It is an arithmetic number, because the mean of its divisors is an integer number (18170460).

Almost surely, 2^72589963 is an apocalyptic number.

72589963 is a deficient number, since it is larger than the sum of its proper divisors (91877).

72589963 is an equidigital number, since it uses as much as digits as its factorization.

72589963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91876.

The product of its digits is 816480, while the sum is 49.

The square root of 72589963 is about 8519.9743544215. The cubic root of 72589963 is about 417.1499459797.

The spelling of 72589963 in words is "seventy-two million, five hundred eighty-nine thousand, nine hundred sixty-three".