6820971 has 8 divisors (see below), whose sum is σ = 9106944. Its totient is φ = 4541160.

The previous prime is 6820967. The next prime is 6820973. The reversal of 6820971 is 1790286.

6820971 is a nontrivial binomial coefficient, being equal to C(3694, 2).

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

It is not a de Polignac number, because 6820971 - 2² = 6820967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6820973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 4616.

It is an arithmetic number, because the mean of its divisors is an integer number (1138368).

Almost surely, 2^6820971 is an apocalyptic number.

6820971 is the 3693-rd triangular number and also the 1847-th hexagonal number.

6820971 is a deficient number, since it is larger than the sum of its proper divisors (2285973).

6820971 is a wasteful number, since it uses less digits than its factorization.

6820971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 6820971 is about 2611.6988723817. The cubic root of 6820971 is about 189.6482040639.

The spelling of 6820971 in words is "six million, eight hundred twenty thousand, nine hundred seventy-one".