72069233 has 2 divisors, whose sum is σ = 72069234. Its totient is φ = 72069232.

The previous prime is 72069211. The next prime is 72069259. The reversal of 72069233 is 33296027.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 16834609 = 7432^2 + 4103^2 .

It is an emirp because it is prime and its reverse (33296027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72069233 - 2⁶ = 72069169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72069233.

It is not a weakly prime, because it can be changed into another prime (72069133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36034616 + 36034617.

It is an arithmetic number, because the mean of its divisors is an integer number (36034617).

Almost surely, 2^72069233 is an apocalyptic number.

It is an amenable number.

72069233 is a deficient number, since it is larger than the sum of its proper divisors (1).

72069233 is an equidigital number, since it uses as much as digits as its factorization.

72069233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 72069233 is about 8489.3599876551. The cubic root of 72069233 is about 416.1500648968.

The spelling of 72069233 in words is "seventy-two million, sixty-nine thousand, two hundred thirty-three".