6706386785 has 16 divisors (see below), whose sum is σ = 9200850816. Its totient is φ = 4596905088.

The previous prime is 6706386781. The next prime is 6706386811. The reversal of 6706386785 is 5876836076.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6706386785 - 2² = 6706386781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6706386785.

It is not an unprimeable number, because it can be changed into a prime (6706386781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59642 + ... + 130268.

It is an arithmetic number, because the mean of its divisors is an integer number (575053176).

Almost surely, 2^6706386785 is an apocalyptic number.

It is an amenable number.

6706386785 is a deficient number, since it is larger than the sum of its proper divisors (2494464031).

6706386785 is a wasteful number, since it uses less digits than its factorization.

6706386785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73352.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The square root of 6706386785 is about 81892.5319244679. The cubic root of 6706386785 is about 1885.8024651731.

The spelling of 6706386785 in words is "six billion, seven hundred six million, three hundred eighty-six thousand, seven hundred eighty-five".