6655545 has 48 divisors (see below), whose sum is σ = 12859392. Its totient is φ = 3162240.

The previous prime is 6655543. The next prime is 6655547. The reversal of 6655545 is 5455566.

It is a happy number.

6655545 is a `hidden beast` number, since 66 + 55 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (6655543) and next prime (6655547).

It is not a de Polignac number, because 6655545 - 2¹ = 6655543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6655541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17952 + ... + 18318.

It is an arithmetic number, because the mean of its divisors is an integer number (267904).

Almost surely, 2^6655545 is an apocalyptic number.

6655545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6655545 is a deficient number, since it is larger than the sum of its proper divisors (6203847).

6655545 is a wasteful number, since it uses less digits than its factorization.

6655545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 419 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 6655545 is about 2579.8342970044. The cubic root of 6655545 is about 188.1024886328.

It can be divided in two parts, 66 and 55545, that added together give a triangular number (55611 = T₃₃₃).

The spelling of 6655545 in words is "six million, six hundred fifty-five thousand, five hundred forty-five".