706665081 has 12 divisors (see below), whose sum is σ = 994422192. Its totient is φ = 446314104.

The previous prime is 706665067. The next prime is 706665121. The reversal of 706665081 is 180566607.

It is not a de Polignac number, because 706665081 - 2⁶ = 706665017 is a prime.

It is a super-2 number, since 2×706665081² = 998751073409473122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (706665031) 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 in 11 ways as a sum of consecutive naturals, for example, 325171 + ... + 327336.

It is an arithmetic number, because the mean of its divisors is an integer number (82868516).

Almost surely, 2^706665081 is an apocalyptic number.

It is an amenable number.

706665081 is a deficient number, since it is larger than the sum of its proper divisors (287757111).

706665081 is a wasteful number, since it uses less digits than its factorization.

706665081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652548 (or 652529 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 706665081 is about 26583.1728918878. The cubic root of 706665081 is about 890.7131770474.

The spelling of 706665081 in words is "seven hundred six million, six hundred sixty-five thousand, eighty-one".