6670429 has 2 divisors, whose sum is σ = 6670430. Its totient is φ = 6670428.

The previous prime is 6670427. The next prime is 6670451. The reversal of 6670429 is 9240766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 91204 = 2565^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670429 - 2¹ = 6670427 is a prime.

Together with 6670427, it forms a pair of twin primes.

6670429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6670394 and 6670403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6670423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335214 + 3335215.

It is an arithmetic number, because the mean of its divisors is an integer number (3335215).

Almost surely, 2^6670429 is an apocalyptic number.

It is an amenable number.

6670429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670429 is an equidigital number, since it uses as much as digits as its factorization.

6670429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6670429 is about 2582.7173674252. The cubic root of 6670429 is about 188.2426040302.

The spelling of 6670429 in words is "six million, six hundred seventy thousand, four hundred twenty-nine".