6655215 has 32 divisors (see below), whose sum is σ = 12266496. Its totient is φ = 3018240.

The previous prime is 6655199. The next prime is 6655237. The reversal of 6655215 is 5125566.

It is not a de Polignac number, because 6655215 - 2⁴ = 6655199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25174 + ... + 25436.

It is an arithmetic number, because the mean of its divisors is an integer number (383328).

Almost surely, 2^6655215 is an apocalyptic number.

6655215 is a deficient number, since it is larger than the sum of its proper divisors (5611281).

6655215 is a wasteful number, since it uses less digits than its factorization.

6655215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its digits is 9000, while the sum is 30.

The square root of 6655215 is about 2579.7703386154. The cubic root of 6655215 is about 188.0993797040.

The spelling of 6655215 in words is "six million, six hundred fifty-five thousand, two hundred fifteen".