6920861 has 8 divisors (see below), whose sum is σ = 7280064. Its totient is φ = 6566560.

The previous prime is 6920833. The next prime is 6920869. The reversal of 6920861 is 1680296.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6920861 is a prime.

It is a Duffinian number.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1865 + ... + 4161.

It is an arithmetic number, because the mean of its divisors is an integer number (910008).

Almost surely, 2^6920861 is an apocalyptic number.

It is an amenable number.

6920861 is a deficient number, since it is larger than the sum of its proper divisors (359203).

6920861 is a wasteful number, since it uses less digits than its factorization.

6920861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2451.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 6920861 is about 2630.7529340476. The cubic root of 6920861 is about 190.5694917123.

The spelling of 6920861 in words is "six million, nine hundred twenty thousand, eight hundred sixty-one".