6740429 has 2 divisors, whose sum is σ = 6740430. Its totient is φ = 6740428.

The previous prime is 6740407. The next prime is 6740443. The reversal of 6740429 is 9240476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5750404 + 990025 = 2398^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 6740429 - 2¹² = 6736333 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6740395 and 6740404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6740479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3370214 + 3370215.

It is an arithmetic number, because the mean of its divisors is an integer number (3370215).

Almost surely, 2^6740429 is an apocalyptic number.

It is an amenable number.

6740429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6740429 is an equidigital number, since it uses as much as digits as its factorization.

6740429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6740429 is about 2596.2336181476. The cubic root of 6740429 is about 188.8987914967.

The spelling of 6740429 in words is "six million, seven hundred forty thousand, four hundred twenty-nine".