787668241 has 2 divisors, whose sum is σ = 787668242. Its totient is φ = 787668240.

The previous prime is 787668229. The next prime is 787668269. The reversal of 787668241 is 142866787.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533425216 + 254243025 = 23096^2 + 15945^2 .

It is a cyclic number.

It is not a de Polignac number, because 787668241 - 2⁵ = 787668209 is a prime.

It is not a weakly prime, because it can be changed into another prime (787668041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393834120 + 393834121.

It is an arithmetic number, because the mean of its divisors is an integer number (393834121).

Almost surely, 2^787668241 is an apocalyptic number.

It is an amenable number.

787668241 is a deficient number, since it is larger than the sum of its proper divisors (1).

787668241 is an equidigital number, since it uses as much as digits as its factorization.

787668241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 49.

The square root of 787668241 is about 28065.4278606260. The cubic root of 787668241 is about 923.5231328238.

The spelling of 787668241 in words is "seven hundred eighty-seven million, six hundred sixty-eight thousand, two hundred forty-one".