6655630 has 8 divisors (see below), whose sum is σ = 11980152. Its totient is φ = 2662248.

The previous prime is 6655603. The next prime is 6655631. The reversal of 6655630 is 365566.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6655592 and 6655601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332772 + ... + 332791.

It is an arithmetic number, because the mean of its divisors is an integer number (1497519).

Almost surely, 2^6655630 is an apocalyptic number.

6655630 is a deficient number, since it is larger than the sum of its proper divisors (5324522).

6655630 is a wasteful number, since it uses less digits than its factorization.

6655630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665570.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 6655630 is about 2579.8507708780. The cubic root of 6655630 is about 188.1032894009.

Subtracting from 6655630 its reverse (365566), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 66 and 55630, that added together give a square (55696 = 236²).

The spelling of 6655630 in words is "six million, six hundred fifty-five thousand, six hundred thirty".