72768419 has 2 divisors, whose sum is σ = 72768420. Its totient is φ = 72768418.

The previous prime is 72768391. The next prime is 72768457. The reversal of 72768419 is 91486727.

It is a weak prime.

It is an emirp because it is prime and its reverse (91486727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72768419 - 2¹² = 72764323 is a prime.

It is a super-2 number, since 2×72768419² = 10590485607519122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72768419.

It is not a weakly prime, because it can be changed into another prime (72768469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36384209 + 36384210.

It is an arithmetic number, because the mean of its divisors is an integer number (36384210).

Almost surely, 2^72768419 is an apocalyptic number.

72768419 is a deficient number, since it is larger than the sum of its proper divisors (1).

72768419 is an equidigital number, since it uses as much as digits as its factorization.

72768419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 72768419 is about 8530.4407271840. The cubic root of 72768419 is about 417.4915083073.

The spelling of 72768419 in words is "seventy-two million, seven hundred sixty-eight thousand, four hundred nineteen".