6610655999 has 2 divisors, whose sum is σ = 6610656000. Its totient is φ = 6610655998.

The previous prime is 6610655993. The next prime is 6610656011. The reversal of 6610655999 is 9995560166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6610655999 - 2¹² = 6610651903 is a prime.

It is a super-2 number, since 2×6610655999² = 87401545474229376002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6610655993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305327999 + 3305328000.

It is an arithmetic number, because the mean of its divisors is an integer number (3305328000).

Almost surely, 2^6610655999 is an apocalyptic number.

6610655999 is a deficient number, since it is larger than the sum of its proper divisors (1).

6610655999 is an equidigital number, since it uses as much as digits as its factorization.

6610655999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The square root of 6610655999 is about 81305.9407362094. The cubic root of 6610655999 is about 1876.7864217809.

The spelling of 6610655999 in words is "six billion, six hundred ten million, six hundred fifty-five thousand, nine hundred ninety-nine".