72880079 has 2 divisors, whose sum is σ = 72880080. Its totient is φ = 72880078.

The previous prime is 72880057. The next prime is 72880091. The reversal of 72880079 is 97008827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72880079 - 2¹⁶ = 72814543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72880099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36440039 + 36440040.

It is an arithmetic number, because the mean of its divisors is an integer number (36440040).

Almost surely, 2^72880079 is an apocalyptic number.

72880079 is a deficient number, since it is larger than the sum of its proper divisors (1).

72880079 is an equidigital number, since it uses as much as digits as its factorization.

72880079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 72880079 is about 8536.9830150938. The cubic root of 72880079 is about 417.7049400807.

The spelling of 72880079 in words is "seventy-two million, eight hundred eighty thousand, seventy-nine".