6653655 has 12 divisors (see below), whose sum is σ = 11533080. Its totient is φ = 3548592.

The previous prime is 6653653. The next prime is 6653659. The reversal of 6653655 is 5563566.

It is a happy number.

It is not a de Polignac number, because 6653655 - 2¹ = 6653653 is a prime.

It is a super-2 number, since 2×6653655² = 88542249718050, which contains 22 as substring.

It is an Ulam number.

6653655 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653653) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 73885 + ... + 73974.

It is an arithmetic number, because the mean of its divisors is an integer number (961090).

Almost surely, 2^6653655 is an apocalyptic number.

6653655 is a deficient number, since it is larger than the sum of its proper divisors (4879425).

6653655 is a wasteful number, since it uses less digits than its factorization.

6653655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147870 (or 147867 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 6653655 is about 2579.4679683997. The cubic root of 6653655 is about 188.0846815581.

The spelling of 6653655 in words is "six million, six hundred fifty-three thousand, six hundred fifty-five".