6690829 has 2 divisors, whose sum is σ = 6690830. Its totient is φ = 6690828.

The previous prime is 6690797. The next prime is 6690847. The reversal of 6690829 is 9280966.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3697929 + 2992900 = 1923^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 6690829 - 2⁵ = 6690797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6690791 and 6690800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6690899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345414 + 3345415.

It is an arithmetic number, because the mean of its divisors is an integer number (3345415).

Almost surely, 2^6690829 is an apocalyptic number.

It is an amenable number.

6690829 is a deficient number, since it is larger than the sum of its proper divisors (1).

6690829 is an equidigital number, since it uses as much as digits as its factorization.

6690829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 6690829 is about 2586.6636812698. The cubic root of 6690829 is about 188.4343078930.

The spelling of 6690829 in words is "six million, six hundred ninety thousand, eight hundred twenty-nine".