6601703081 has 2 divisors, whose sum is σ = 6601703082. Its totient is φ = 6601703080.

The previous prime is 6601703077. The next prime is 6601703089. The reversal of 6601703081 is 1803071066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5396224681 + 1205478400 = 73459^2 + 34720^2 .

It is a cyclic number.

It is not a de Polignac number, because 6601703081 - 2² = 6601703077 is a prime.

It is a super-2 number, since 2×6601703081² = 87164967139369785122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6601703089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300851540 + 3300851541.

It is an arithmetic number, because the mean of its divisors is an integer number (3300851541).

Almost surely, 2^6601703081 is an apocalyptic number.

It is an amenable number.

6601703081 is a deficient number, since it is larger than the sum of its proper divisors (1).

6601703081 is an equidigital number, since it uses as much as digits as its factorization.

6601703081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 6601703081 is about 81250.8651092405. The cubic root of 6601703081 is about 1875.9387849731.

The spelling of 6601703081 in words is "six billion, six hundred one million, seven hundred three thousand, eighty-one".