7681657603 has 2 divisors, whose sum is σ = 7681657604. Its totient is φ = 7681657602.

The previous prime is 7681657591. The next prime is 7681657609. The reversal of 7681657603 is 3067561867.

It is a strong prime.

It is an emirp because it is prime and its reverse (3067561867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7681657603 is a prime.

It is a super-3 number, since 3×7681657603³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7681657609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3840828801 + 3840828802.

It is an arithmetic number, because the mean of its divisors is an integer number (3840828802).

Almost surely, 2^7681657603 is an apocalyptic number.

7681657603 is a deficient number, since it is larger than the sum of its proper divisors (1).

7681657603 is an equidigital number, since it uses as much as digits as its factorization.

7681657603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 7681657603 is about 87645.0660505199. The cubic root of 7681657603 is about 1973.1115937164. Note that the first 3 decimals are identical.

The spelling of 7681657603 in words is "seven billion, six hundred eighty-one million, six hundred fifty-seven thousand, six hundred three".