768428417 has 2 divisors, whose sum is σ = 768428418. Its totient is φ = 768428416.

The previous prime is 768428393. The next prime is 768428443. The reversal of 768428417 is 714824867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713904961 + 54523456 = 26719^2 + 7384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768428417 is a prime.

It is not a weakly prime, because it can be changed into another prime (768428467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384214208 + 384214209.

It is an arithmetic number, because the mean of its divisors is an integer number (384214209).

Almost surely, 2^768428417 is an apocalyptic number.

It is an amenable number.

768428417 is a deficient number, since it is larger than the sum of its proper divisors (1).

768428417 is an equidigital number, since it uses as much as digits as its factorization.

768428417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 47.

The square root of 768428417 is about 27720.5414268914. The cubic root of 768428417 is about 915.9416453898.

The spelling of 768428417 in words is "seven hundred sixty-eight million, four hundred twenty-eight thousand, four hundred seventeen".