705846639664 has 20 divisors (see below), whose sum is σ = 1373710507456. Its totient is φ = 351340702272.

The previous prime is 705846639649. The next prime is 705846639677. The reversal of 705846639664 is 466936648507.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 705846639596 and 705846639605.

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, 98909919 + ... + 98917054.

Almost surely, 2^705846639664 is an apocalyptic number.

It is an amenable number.

705846639664 is a deficient number, since it is larger than the sum of its proper divisors (667863867792).

705846639664 is a wasteful number, since it uses less digits than its factorization.

705846639664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197827204 (or 197827198 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 64.

The spelling of 705846639664 in words is "seven hundred five billion, eight hundred forty-six million, six hundred thirty-nine thousand, six hundred sixty-four".