2009700684 has 18 divisors (see below), whose sum is σ = 5080076820. Its totient is φ = 669900216.

The previous prime is 2009700673. The next prime is 2009700703. The reversal of 2009700684 is 4860079002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 55825019 = 2009700684 / (2 + 0 + 0 + 9 + 7 + 0 + 0 + 6 + 8 + 4).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27912474 + ... + 27912545.

It is an arithmetic number, because the mean of its divisors is an integer number (282226490).

Almost surely, 2^2009700684 is an apocalyptic number.

It is an amenable number.

2009700684 is an abundant number, since it is smaller than the sum of its proper divisors (3070376136).

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

2009700684 is a wasteful number, since it uses less digits than its factorization.

2009700684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55825029 (or 55825024 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2009700684 is about 44829.6852989177. The cubic root of 2009700684 is about 1261.9547813277.

Adding to 2009700684 its reverse (4860079002), we get a palindrome (6869779686).

The spelling of 2009700684 in words is "two billion, nine million, seven hundred thousand, six hundred eighty-four".