779663 has 2 divisors, whose sum is σ = 779664. Its totient is φ = 779662.

The previous prime is 779659. The next prime is 779693. The reversal of 779663 is 366977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 779663 - 2² = 779659 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 779663.

It is not a weakly prime, because it can be changed into another prime (779693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389831 + 389832.

It is an arithmetic number, because the mean of its divisors is an integer number (389832).

2⁷⁷⁹⁶⁶³ is an apocalyptic number.

779663 is a deficient number, since it is larger than the sum of its proper divisors (1).

779663 is an equidigital number, since it uses as much as digits as its factorization.

779663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 38.

The square root of 779663 is about 882.9852773405. The cubic root of 779663 is about 92.0383819057.

Subtracting from 779663 its reverse (366977), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 779663 in words is "seven hundred seventy-nine thousand, six hundred sixty-three".