6813629 has 2 divisors, whose sum is σ = 6813630. Its totient is φ = 6813628.

The previous prime is 6813613. The next prime is 6813649. The reversal of 6813629 is 9263186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4008004 + 2805625 = 2002^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 6813629 - 2⁴ = 6813613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6813649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406814 + 3406815.

It is an arithmetic number, because the mean of its divisors is an integer number (3406815).

Almost surely, 2^6813629 is an apocalyptic number.

It is an amenable number.

6813629 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813629 is an equidigital number, since it uses as much as digits as its factorization.

6813629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 6813629 is about 2610.2928954430. The cubic root of 6813629 is about 189.5801347231.

The spelling of 6813629 in words is "six million, eight hundred thirteen thousand, six hundred twenty-nine".