72814223 has 2 divisors, whose sum is σ = 72814224. Its totient is φ = 72814222.

The previous prime is 72814211. The next prime is 72814241. The reversal of 72814223 is 32241827.

It is a weak prime.

It is an emirp because it is prime and its reverse (32241827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72814223 - 2²⁰ = 71765647 is a prime.

It is a super-2 number, since 2×72814223² = 10603822142187458, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72814243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36407111 + 36407112.

It is an arithmetic number, because the mean of its divisors is an integer number (36407112).

Almost surely, 2^72814223 is an apocalyptic number.

72814223 is a deficient number, since it is larger than the sum of its proper divisors (1).

72814223 is an equidigital number, since it uses as much as digits as its factorization.

72814223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 29.

The square root of 72814223 is about 8533.1250430308. The cubic root of 72814223 is about 417.5790864557.

It can be divided in two parts, 72814 and 223, that added together give a palindrome (73037).

The spelling of 72814223 in words is "seventy-two million, eight hundred fourteen thousand, two hundred twenty-three".