6655577 has 2 divisors, whose sum is σ = 6655578. Its totient is φ = 6655576.

The previous prime is 6655549. The next prime is 6655591. The reversal of 6655577 is 7755566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 2611456 = 2011^2 + 1616^2 .

It is a cyclic number.

It is not a de Polignac number, because 6655577 - 2⁸ = 6655321 is a prime.

It is a zygodrome in base 10.

It is not a weakly prime, because it can be changed into another prime (6655547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327788 + 3327789.

It is an arithmetic number, because the mean of its divisors is an integer number (3327789).

Almost surely, 2^6655577 is an apocalyptic number.

It is an amenable number.

6655577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6655577 is an equidigital number, since it uses as much as digits as its factorization.

6655577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220500, while the sum is 41.

The square root of 6655577 is about 2579.8404989456. The cubic root of 6655577 is about 188.1027900992.

The spelling of 6655577 in words is "six million, six hundred fifty-five thousand, five hundred seventy-seven".