706510105666 has 8 divisors (see below), whose sum is σ = 1071672632460. Its totient is φ = 349285894848.

The previous prime is 706510105633. The next prime is 706510105729. The reversal of 706510105666 is 666501015607.

It can be written as a sum of positive squares in 2 ways, for example, as 611334770641 + 95175335025 = 781879^2 + 308505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984578771 + ... + 1984579126.

Almost surely, 2^706510105666 is an apocalyptic number.

706510105666 is a deficient number, since it is larger than the sum of its proper divisors (365162526794).

706510105666 is a wasteful number, since it uses less digits than its factorization.

706510105666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969157988.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 706510105666 in words is "seven hundred six billion, five hundred ten million, one hundred five thousand, six hundred sixty-six".