6742405 has 8 divisors (see below), whose sum is σ = 8128512. Its totient is φ = 5368848.

The previous prime is 6742369. The next prime is 6742423. The reversal of 6742405 is 5042476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6742405 - 2¹³ = 6734213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 4138.

It is an arithmetic number, because the mean of its divisors is an integer number (1016064).

Almost surely, 2^6742405 is an apocalyptic number.

It is an amenable number.

6742405 is a deficient number, since it is larger than the sum of its proper divisors (1386107).

6742405 is a wasteful number, since it uses less digits than its factorization.

6742405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275.

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

The square root of 6742405 is about 2596.6141415312. The cubic root of 6742405 is about 188.9172486574.

The spelling of 6742405 in words is "six million, seven hundred forty-two thousand, four hundred five".