6740425 has 6 divisors (see below), whose sum is σ = 8358158. Its totient is φ = 5392320.

The previous prime is 6740407. The next prime is 6740429. The reversal of 6740425 is 5240476.

It can be written as a sum of positive squares in 3 ways, for example, as 2229049 + 4511376 = 1493^2 + 2124^2 .

It is not a de Polignac number, because 6740425 - 2⁷ = 6740297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6740393 and 6740402.

It is not an unprimeable number, because it can be changed into a prime (6740429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134784 + ... + 134833.

Almost surely, 2^6740425 is an apocalyptic number.

It is an amenable number.

6740425 is a deficient number, since it is larger than the sum of its proper divisors (1617733).

6740425 is a wasteful number, since it uses less digits than its factorization.

6740425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269627 (or 269622 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 6740425 is about 2596.2328478008. The cubic root of 6740425 is about 188.8987541304.

The spelling of 6740425 in words is "six million, seven hundred forty thousand, four hundred twenty-five".