6816630 has 32 divisors (see below), whose sum is σ = 17222400. Its totient is φ = 1721952.

The previous prime is 6816629. The next prime is 6816631. The reversal of 6816630 is 366186.

It is an interprime number because it is at equal distance from previous prime (6816629) and next prime (6816631).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5410 + ... + 6549.

It is an arithmetic number, because the mean of its divisors is an integer number (538200).

Almost surely, 2^6816630 is an apocalyptic number.

6816630 is an abundant number, since it is smaller than the sum of its proper divisors (10405770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6816630 is a wasteful number, since it uses less digits than its factorization.

6816630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 6816630 is about 2610.8676718670. The cubic root of 6816630 is about 189.6079635780.

The spelling of 6816630 in words is "six million, eight hundred sixteen thousand, six hundred thirty".