6985520329 has 2 divisors, whose sum is σ = 6985520330. Its totient is φ = 6985520328.

The previous prime is 6985520327. The next prime is 6985520369. The reversal of 6985520329 is 9230255896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5971734729 + 1013785600 = 77277^2 + 31840^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985520329 - 2¹ = 6985520327 is a prime.

Together with 6985520327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6985520327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492760164 + 3492760165.

It is an arithmetic number, because the mean of its divisors is an integer number (3492760165).

Almost surely, 2^6985520329 is an apocalyptic number.

It is an amenable number.

6985520329 is a deficient number, since it is larger than the sum of its proper divisors (1).

6985520329 is an equidigital number, since it uses as much as digits as its factorization.

6985520329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 6985520329 is about 83579.4252732094. The cubic root of 6985520329 is about 1911.6112906500.

The spelling of 6985520329 in words is "six billion, nine hundred eighty-five million, five hundred twenty thousand, three hundred twenty-nine".