6920849 has 4 divisors (see below), whose sum is σ = 7453236. Its totient is φ = 6388464.

The previous prime is 6920833. The next prime is 6920869. The reversal of 6920849 is 9480296.

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 4231249 + 2689600 = 2057^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920849 - 2⁴ = 6920833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6920869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 266174 + ... + 266199.

It is an arithmetic number, because the mean of its divisors is an integer number (1863309).

Almost surely, 2^6920849 is an apocalyptic number.

It is an amenable number.

6920849 is a deficient number, since it is larger than the sum of its proper divisors (532387).

6920849 is a wasteful number, since it uses less digits than its factorization.

6920849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532386.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 6920849 is about 2630.7506533307. The cubic root of 6920849 is about 190.5693815701.

The spelling of 6920849 in words is "six million, nine hundred twenty thousand, eight hundred forty-nine".