6630920 has 32 divisors (see below), whose sum is σ = 15082200. Its totient is φ = 2623488.

The previous prime is 6630919. The next prime is 6630961. The reversal of 6630920 is 290366.

It can be written as a sum of positive squares in 4 ways, for example, as 4153444 + 2477476 = 2038^2 + 1574^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6630920.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3026 + ... + 4734.

Almost surely, 2^6630920 is an apocalyptic number.

It is an amenable number.

6630920 is an abundant number, since it is smaller than the sum of its proper divisors (8451280).

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

6630920 is a wasteful number, since it uses less digits than its factorization.

6630920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 6630920 is about 2575.0572809163. The cubic root of 6630920 is about 187.8702137270.

The spelling of 6630920 in words is "six million, six hundred thirty thousand, nine hundred twenty".