6297755661 has 6 divisors (see below), whose sum is σ = 9096758190. Its totient is φ = 4198503768.

The previous prime is 6297755609. The next prime is 6297755671. The reversal of 6297755661 is 1665577926.

6297755661 is a `hidden beast` number, since 6 + 2 + 9 + 7 + 75 + 566 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5280783561 + 1016972100 = 72669^2 + 31890^2 .

It is not a de Polignac number, because 6297755661 - 2¹¹ = 6297753613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6297755598 and 6297755607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6297755671) 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 5 ways as a sum of consecutive naturals, for example, 349875306 + ... + 349875323.

It is an arithmetic number, because the mean of its divisors is an integer number (1516126365).

Almost surely, 2^6297755661 is an apocalyptic number.

It is an amenable number.

6297755661 is a deficient number, since it is larger than the sum of its proper divisors (2799002529).

6297755661 is a wasteful number, since it uses less digits than its factorization.

6297755661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699750635 (or 699750632 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The square root of 6297755661 is about 79358.4000657775. The cubic root of 6297755661 is about 1846.6954067904.

The spelling of 6297755661 in words is "six billion, two hundred ninety-seven million, seven hundred fifty-five thousand, six hundred sixty-one".