679676663 has 2 divisors, whose sum is σ = 679676664. Its totient is φ = 679676662.

The previous prime is 679676633. The next prime is 679676671. The reversal of 679676663 is 366676976.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679676663 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 679676599 and 679676608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679676603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339838331 + 339838332.

It is an arithmetic number, because the mean of its divisors is an integer number (339838332).

Almost surely, 2^679676663 is an apocalyptic number.

679676663 is a deficient number, since it is larger than the sum of its proper divisors (1).

679676663 is an equidigital number, since it uses as much as digits as its factorization.

679676663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 56.

The square root of 679676663 is about 26070.6091796874. The cubic root of 679676663 is about 879.2265341271.

The spelling of 679676663 in words is "six hundred seventy-nine million, six hundred seventy-six thousand, six hundred sixty-three".