72616919 has 2 divisors, whose sum is σ = 72616920. Its totient is φ = 72616918.

The previous prime is 72616897. The next prime is 72616931. The reversal of 72616919 is 91961627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72616919 - 2¹² = 72612823 is a prime.

It is a super-2 number, since 2×72616919² = 10546433850105122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72612919) 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, 36308459 + 36308460.

It is an arithmetic number, because the mean of its divisors is an integer number (36308460).

Almost surely, 2^72616919 is an apocalyptic number.

72616919 is a deficient number, since it is larger than the sum of its proper divisors (1).

72616919 is an equidigital number, since it uses as much as digits as its factorization.

72616919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 72616919 is about 8521.5561372322. The cubic root of 72616919 is about 417.2015752586.

The spelling of 72616919 in words is "seventy-two million, six hundred sixteen thousand, nine hundred nineteen".