6557630 has 16 divisors (see below), whose sum is σ = 11872224. Its totient is φ = 2607840.

The previous prime is 6557623. The next prime is 6557651. The reversal of 6557630 is 367556.

It is a super-2 number, since 2×6557630² = 86005022433800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (742014).

Almost surely, 2^6557630 is an apocalyptic number.

6557630 is a deficient number, since it is larger than the sum of its proper divisors (5314594).

6557630 is a wasteful number, since it uses less digits than its factorization.

6557630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 6557630 is about 2560.7869884081. The cubic root of 6557630 is about 187.1754860819.

The spelling of 6557630 in words is "six million, five hundred fifty-seven thousand, six hundred thirty".