72880999 has 2 divisors, whose sum is σ = 72881000. Its totient is φ = 72880998.

The previous prime is 72880987. The next prime is 72881041. The reversal of 72880999 is 99908827.

It is a weak prime.

It is an emirp because it is prime and its reverse (99908827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72880999 - 2⁵ = 72880967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72880939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36440499 + 36440500.

It is an arithmetic number, because the mean of its divisors is an integer number (36440500).

Almost surely, 2^72880999 is an apocalyptic number.

72880999 is a deficient number, since it is larger than the sum of its proper divisors (1).

72880999 is an equidigital number, since it uses as much as digits as its factorization.

72880999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 72880999 is about 8537.0368981281. The cubic root of 72880999 is about 417.7066977029.

The spelling of 72880999 in words is "seventy-two million, eight hundred eighty thousand, nine hundred ninety-nine".