6709866564 has 24 divisors (see below), whose sum is σ = 15737481760. Its totient is φ = 2225032704.

The previous prime is 6709866563. The next prime is 6709866577. The reversal of 6709866564 is 4656689076.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6709866563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1446274 + ... + 1450905.

Almost surely, 2^6709866564 is an apocalyptic number.

It is an amenable number.

6709866564 is an abundant number, since it is smaller than the sum of its proper divisors (9027615196).

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

6709866564 is a wasteful number, since it uses less digits than its factorization.

6709866564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897379 (or 2897377 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The square root of 6709866564 is about 81913.7751785376. The cubic root of 6709866564 is about 1886.1285742673.

The spelling of 6709866564 in words is "six billion, seven hundred nine million, eight hundred sixty-six thousand, five hundred sixty-four".