6920605 has 4 divisors (see below), whose sum is σ = 8304732. Its totient is φ = 5536480.

The previous prime is 6920597. The next prime is 6920629. The reversal of 6920605 is 5060296.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4691556 + 2229049 = 2166^2 + 1493^2 .

It is not a de Polignac number, because 6920605 - 2³ = 6920597 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 692056 + ... + 692065.

It is an arithmetic number, because the mean of its divisors is an integer number (2076183).

Almost surely, 2^6920605 is an apocalyptic number.

It is an amenable number.

6920605 is a deficient number, since it is larger than the sum of its proper divisors (1384127).

6920605 is a wasteful number, since it uses less digits than its factorization.

6920605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384126.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 6920605 is about 2630.7042783255. The cubic root of 6920605 is about 190.5671419858.

The spelling of 6920605 in words is "six million, nine hundred twenty thousand, six hundred five".