70685406856 has 16 divisors (see below), whose sum is σ = 132546456540. Its totient is φ = 35339685120.

The previous prime is 70685406787. The next prime is 70685406859. The reversal of 70685406856 is 65860458607.

It can be written as a sum of positive squares in 2 ways, for example, as 67530337956 + 3155068900 = 259866^2 + 56170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70685406797 and 70685406806.

It is not an unprimeable number, because it can be changed into a prime (70685406859) 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 3 ways as a sum of consecutive naturals, for example, 276165 + ... + 466516.

Almost surely, 2^70685406856 is an apocalyptic number.

It is an amenable number.

70685406856 is a deficient number, since it is larger than the sum of its proper divisors (61861049684).

70685406856 is a wasteful number, since it uses less digits than its factorization.

70685406856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754584 (or 754580 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 70685406856 in words is "seventy billion, six hundred eighty-five million, four hundred six thousand, eight hundred fifty-six".