706085251666 has 4 divisors (see below), whose sum is σ = 1059127877502. Its totient is φ = 353042625832.

The previous prime is 706085251649. The next prime is 706085251681. The reversal of 706085251666 is 666152580607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666152580607 = 20747 ⋅32108381.

It can be written as a sum of positive squares in only one way, i.e., 503071025625 + 203014226041 = 709275^2 + 450571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176521312915 + ... + 176521312918.

Almost surely, 2^706085251666 is an apocalyptic number.

706085251666 is a deficient number, since it is larger than the sum of its proper divisors (353042625836).

706085251666 is a wasteful number, since it uses less digits than its factorization.

706085251666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353042625835.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 706085251666 in words is "seven hundred six billion, eighty-five million, two hundred fifty-one thousand, six hundred sixty-six".