6648135 has 32 divisors (see below), whose sum is σ = 11601408. Its totient is φ = 3231360.

The previous prime is 6648133. The next prime is 6648143. The reversal of 6648135 is 5318466.

6648135 = T₁₄₄ + T₁₄₅ + ... + T₃₄₉.

It is not a de Polignac number, because 6648135 - 2¹ = 6648133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6648096 and 6648105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19920 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (362544).

Almost surely, 2^6648135 is an apocalyptic number.

6648135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6648135 is a deficient number, since it is larger than the sum of its proper divisors (4953273).

6648135 is a wasteful number, since it uses less digits than its factorization.

6648135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455.

The product of its digits is 17280, while the sum is 33.

The square root of 6648135 is about 2578.3977582987. The cubic root of 6648135 is about 188.0326542796.

The spelling of 6648135 in words is "six million, six hundred forty-eight thousand, one hundred thirty-five".