6679217929 has 2 divisors, whose sum is σ = 6679217930. Its totient is φ = 6679217928.

The previous prime is 6679217903. The next prime is 6679217959. The reversal of 6679217929 is 9297129766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6586134025 + 93083904 = 81155^2 + 9648^2 .

It is a cyclic number.

It is not a de Polignac number, because 6679217929 - 2³¹ = 4531734281 is a prime.

It is a super-2 number, since 2×6679217929² = 89223904286150098082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6679217959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3339608964 + 3339608965.

It is an arithmetic number, because the mean of its divisors is an integer number (3339608965).

Almost surely, 2^6679217929 is an apocalyptic number.

It is an amenable number.

6679217929 is a deficient number, since it is larger than the sum of its proper divisors (1).

6679217929 is an equidigital number, since it uses as much as digits as its factorization.

6679217929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 58.

The square root of 6679217929 is about 81726.4824215505. The cubic root of 6679217929 is about 1883.2524363160.

The spelling of 6679217929 in words is "six billion, six hundred seventy-nine million, two hundred seventeen thousand, nine hundred twenty-nine".