7681646029 has 2 divisors, whose sum is σ = 7681646030. Its totient is φ = 7681646028.

The previous prime is 7681645997. The next prime is 7681646047. The reversal of 7681646029 is 9206461867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7681646025 + 4 = 87645^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 7681646029 - 2⁵ = 7681645997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7681649029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3840823014 + 3840823015.

It is an arithmetic number, because the mean of its divisors is an integer number (3840823015).

Almost surely, 2^7681646029 is an apocalyptic number.

It is an amenable number.

7681646029 is a deficient number, since it is larger than the sum of its proper divisors (1).

7681646029 is an equidigital number, since it uses as much as digits as its factorization.

7681646029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 7681646029 is about 87645.0000228193. Note that the first 4 decimals coincide. The cubic root of 7681646029 is about 1973.1106027495.

The spelling of 7681646029 in words is "seven billion, six hundred eighty-one million, six hundred forty-six thousand, twenty-nine".