768421117 has 2 divisors, whose sum is σ = 768421118. Its totient is φ = 768421116.

The previous prime is 768421061. The next prime is 768421153. The reversal of 768421117 is 711124867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693321561 + 75099556 = 26331^2 + 8666^2 .

It is a cyclic number.

It is not a de Polignac number, because 768421117 - 2¹⁵ = 768388349 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 (768421177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384210558 + 384210559.

It is an arithmetic number, because the mean of its divisors is an integer number (384210559).

Almost surely, 2^768421117 is an apocalyptic number.

It is an amenable number.

768421117 is a deficient number, since it is larger than the sum of its proper divisors (1).

768421117 is an equidigital number, since it uses as much as digits as its factorization.

768421117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 37.

The square root of 768421117 is about 27720.4097552688. The cubic root of 768421117 is about 915.9387449265.

The spelling of 768421117 in words is "seven hundred sixty-eight million, four hundred twenty-one thousand, one hundred seventeen".