72184369 has 2 divisors, whose sum is σ = 72184370. Its totient is φ = 72184368.

The previous prime is 72184319. The next prime is 72184379. The reversal of 72184369 is 96348127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 18601969 = 7320^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 72184369 - 2⁷ = 72184241 is a prime.

It is a super-2 number, since 2×72184369² = 10421166255856322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72184309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36092184 + 36092185.

It is an arithmetic number, because the mean of its divisors is an integer number (36092185).

Almost surely, 2^72184369 is an apocalyptic number.

It is an amenable number.

72184369 is a deficient number, since it is larger than the sum of its proper divisors (1).

72184369 is an equidigital number, since it uses as much as digits as its factorization.

72184369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 72184369 is about 8496.1384758018. The cubic root of 72184369 is about 416.3715572922.

The spelling of 72184369 in words is "seventy-two million, one hundred eighty-four thousand, three hundred sixty-nine".