6655602719 has 2 divisors, whose sum is σ = 6655602720. Its totient is φ = 6655602718.

The previous prime is 6655602671. The next prime is 6655602727. The reversal of 6655602719 is 9172065566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6655602719 - 2⁸ = 6655602463 is a prime.

It is a super-2 number, since 2×6655602719² = 88594095106320385922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6655602419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327801359 + 3327801360.

It is an arithmetic number, because the mean of its divisors is an integer number (3327801360).

Almost surely, 2^6655602719 is an apocalyptic number.

6655602719 is a deficient number, since it is larger than the sum of its proper divisors (1).

6655602719 is an equidigital number, since it uses as much as digits as its factorization.

6655602719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 6655602719 is about 81581.8773932054. The cubic root of 6655602719 is about 1881.0303239273.

The spelling of 6655602719 in words is "six billion, six hundred fifty-five million, six hundred two thousand, seven hundred nineteen".