72205619 has 2 divisors, whose sum is σ = 72205620. Its totient is φ = 72205618.

The previous prime is 72205591. The next prime is 72205649. The reversal of 72205619 is 91650227.

It is a weak prime.

It is an emirp because it is prime and its reverse (91650227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72205619 - 2¹² = 72201523 is a prime.

It is a super-2 number, since 2×72205619² = 10427302830346322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72205649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36102809 + 36102810.

It is an arithmetic number, because the mean of its divisors is an integer number (36102810).

Almost surely, 2^72205619 is an apocalyptic number.

72205619 is a deficient number, since it is larger than the sum of its proper divisors (1).

72205619 is an equidigital number, since it uses as much as digits as its factorization.

72205619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 72205619 is about 8497.3889519075. The cubic root of 72205619 is about 416.4124111392.

The spelling of 72205619 in words is "seventy-two million, two hundred five thousand, six hundred nineteen".