787370081 has 2 divisors, whose sum is σ = 787370082. Its totient is φ = 787370080.

The previous prime is 787370071. The next prime is 787370153. The reversal of 787370081 is 180073787.

787370081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781705681 + 5664400 = 27959^2 + 2380^2 .

It is an emirp because it is prime and its reverse (180073787) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-787370081 is a prime.

It is a super-2 number, since 2×787370081² = 1239903288907893122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (787370041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393685040 + 393685041.

It is an arithmetic number, because the mean of its divisors is an integer number (393685041).

Almost surely, 2^787370081 is an apocalyptic number.

It is an amenable number.

787370081 is a deficient number, since it is larger than the sum of its proper divisors (1).

787370081 is an equidigital number, since it uses as much as digits as its factorization.

787370081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 787370081 is about 28060.1154844380. The cubic root of 787370081 is about 923.4065895067.

The spelling of 787370081 in words is "seven hundred eighty-seven million, three hundred seventy thousand, eighty-one".