65706909770 has 16 divisors (see below), whose sum is σ = 118306015560. Its totient is φ = 26275302144.

The previous prime is 65706909731. The next prime is 65706909787. The reversal of 65706909770 is 7790960756.

It can be written as a sum of positive squares in 4 ways, for example, as 44778368881 + 20928540889 = 211609^2 + 144667^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895667 + ... + 966246.

Almost surely, 2^65706909770 is an apocalyptic number.

65706909770 is a deficient number, since it is larger than the sum of its proper divisors (52599105790).

65706909770 is a wasteful number, since it uses less digits than its factorization.

65706909770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865449.

The product of its (nonzero) digits is 5000940, while the sum is 56.

The spelling of 65706909770 in words is "sixty-five billion, seven hundred six million, nine hundred nine thousand, seven hundred seventy".