2684878785 has 32 divisors (see below), whose sum is σ = 4777920000. Its totient is φ = 1430494848.

The previous prime is 2684878769. The next prime is 2684878793. The reversal of 2684878785 is 5878784862.

2684878785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2684878785 - 2⁴ = 2684878769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132136 + ... + 151094.

It is an arithmetic number, because the mean of its divisors is an integer number (149310000).

Almost surely, 2^2684878785 is an apocalyptic number.

It is an amenable number.

2684878785 is a deficient number, since it is larger than the sum of its proper divisors (2093041215).

2684878785 is a wasteful number, since it uses less digits than its factorization.

2684878785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20022 (or 20016 counting only the distinct ones).

The product of its digits is 48168960, while the sum is 63.

The square root of 2684878785 is about 51815.8159735037. The cubic root of 2684878785 is about 1389.8722835228.

The spelling of 2684878785 in words is "two billion, six hundred eighty-four million, eight hundred seventy-eight thousand, seven hundred eighty-five".