6709861656 has 48 divisors (see below), whose sum is σ = 18376745400. Its totient is φ = 2211487872.

The previous prime is 6709861651. The next prime is 6709861657. The reversal of 6709861656 is 6561689076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6709861651) 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 11 ways as a sum of consecutive naturals, for example, 517146 + ... + 529961.

Almost surely, 2^6709861656 is an apocalyptic number.

It is an amenable number.

6709861656 is an abundant number, since it is smaller than the sum of its proper divisors (11666883744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6709861656 is a wasteful number, since it uses less digits than its factorization.

6709861656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047208 (or 1047201 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 6709861656 is about 81913.7452202010. The cubic root of 6709861656 is about 1886.1281143912.

The spelling of 6709861656 in words is "six billion, seven hundred nine million, eight hundred sixty-one thousand, six hundred fifty-six".