6657055665 has 16 divisors (see below), whose sum is σ = 11470619328. Its totient is φ = 3277319616.

The previous prime is 6657055663. The next prime is 6657055667. The reversal of 6657055665 is 5665507566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6657055663) and next prime (6657055667).

It is not a de Polignac number, because 6657055665 - 2¹ = 6657055663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6657055663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17069179 + ... + 17069568.

It is an arithmetic number, because the mean of its divisors is an integer number (716913708).

Almost surely, 2^6657055665 is an apocalyptic number.

6657055665 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6657055665 is a deficient number, since it is larger than the sum of its proper divisors (4813563663).

6657055665 is a wasteful number, since it uses less digits than its factorization.

6657055665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34138768.

The product of its (nonzero) digits is 5670000, while the sum is 51.

The square root of 6657055665 is about 81590.7817403412. The cubic root of 6657055665 is about 1881.1671929056.

The spelling of 6657055665 in words is "six billion, six hundred fifty-seven million, fifty-five thousand, six hundred sixty-five".