6816730 has 8 divisors (see below), whose sum is σ = 12270132. Its totient is φ = 2726688.

The previous prime is 6816721. The next prime is 6816731. The reversal of 6816730 is 376186.

It can be written as a sum of positive squares in 2 ways, for example, as 6765201 + 51529 = 2601^2 + 227^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6816692 and 6816701.

It is not an unprimeable number, because it can be changed into a prime (6816731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340827 + ... + 340846.

Almost surely, 2^6816730 is an apocalyptic number.

6816730 is a deficient number, since it is larger than the sum of its proper divisors (5453402).

6816730 is a wasteful number, since it uses less digits than its factorization.

6816730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681680.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6816730 is about 2610.8868225184. The cubic root of 6816730 is about 189.6088907567.

The spelling of 6816730 in words is "six million, eight hundred sixteen thousand, seven hundred thirty".