6538630 has 32 divisors (see below), whose sum is σ = 13919040. Its totient is φ = 2163840.

The previous prime is 6538621. The next prime is 6538669. The reversal of 6538630 is 368356.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6538592 and 6538601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420 + ... + 3640.

It is an arithmetic number, because the mean of its divisors is an integer number (434970).

Almost surely, 2^6538630 is an apocalyptic number.

6538630 is an abundant number, since it is smaller than the sum of its proper divisors (7380410).

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

6538630 is a wasteful number, since it uses less digits than its factorization.

6538630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6538630 is about 2557.0745002835. The cubic root of 6538630 is about 186.9945378598.

The spelling of 6538630 in words is "six million, five hundred thirty-eight thousand, six hundred thirty".