6630815 has 8 divisors (see below), whose sum is σ = 8142288. Its totient is φ = 5181120.

The previous prime is 6630803. The next prime is 6630817. The reversal of 6630815 is 5180366.

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

It is a de Polignac number, because none of the positive numbers 2^k-6630815 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 (6630817) 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, 15206 + ... + 15635.

It is an arithmetic number, because the mean of its divisors is an integer number (1017786).

Almost surely, 2^6630815 is an apocalyptic number.

6630815 is a deficient number, since it is larger than the sum of its proper divisors (1511473).

6630815 is a wasteful number, since it uses less digits than its factorization.

6630815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30889.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6630815 is about 2575.0368929396. The cubic root of 6630815 is about 187.8692220860.

The spelling of 6630815 in words is "six million, six hundred thirty thousand, eight hundred fifteen".