679663433 has 2 divisors, whose sum is σ = 679663434. Its totient is φ = 679663432.

The previous prime is 679663429. The next prime is 679663463. The reversal of 679663433 is 334366976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470369344 + 209294089 = 21688^2 + 14467^2 .

It is a cyclic number.

It is not a de Polignac number, because 679663433 - 2² = 679663429 is a prime.

It is not a weakly prime, because it can be changed into another prime (679663463) 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, 339831716 + 339831717.

It is an arithmetic number, because the mean of its divisors is an integer number (339831717).

Almost surely, 2^679663433 is an apocalyptic number.

It is an amenable number.

679663433 is a deficient number, since it is larger than the sum of its proper divisors (1).

679663433 is an equidigital number, since it uses as much as digits as its factorization.

679663433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 47.

The square root of 679663433 is about 26070.3554444507. The cubic root of 679663433 is about 879.2208293349.

The spelling of 679663433 in words is "six hundred seventy-nine million, six hundred sixty-three thousand, four hundred thirty-three".