706665566607 has 128 divisors (see below), whose sum is σ = 1300778680320. Its totient is φ = 329360256000.

The previous prime is 706665566603. The next prime is 706665566617.

706665566607 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 706665566607 - 2² = 706665566603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706665566603) 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 127 ways as a sum of consecutive naturals, for example, 33355744 + ... + 33376922.

It is an arithmetic number, because the mean of its divisors is an integer number (10162333440).

Almost surely, 2^706665566607 is an apocalyptic number.

706665566607 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

706665566607 is a deficient number, since it is larger than the sum of its proper divisors (594113113713).

706665566607 is a wasteful number, since it uses less digits than its factorization.

706665566607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21525.

The product of its (nonzero) digits is 57153600, while the sum is 60.

The spelling of 706665566607 in words is "seven hundred six billion, six hundred sixty-five million, five hundred sixty-six thousand, six hundred seven".