2685857145 has 32 divisors (see below), whose sum is σ = 4411217664. Its totient is φ = 1394976000.

The previous prime is 2685857137. The next prime is 2685857171. The reversal of 2685857145 is 5417585862.

2685857145 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 2685857145 - 2³ = 2685857137 is a prime.

It is a Curzon number.

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, 77884 + ... + 106946.

It is an arithmetic number, because the mean of its divisors is an integer number (137850552).

Almost surely, 2^2685857145 is an apocalyptic number.

It is an amenable number.

2685857145 is a deficient number, since it is larger than the sum of its proper divisors (1725360519).

2685857145 is a wasteful number, since it uses less digits than its factorization.

2685857145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29233.

The product of its digits is 2688000, while the sum is 51.

The square root of 2685857145 is about 51825.2558604393. The cubic root of 2685857145 is about 1390.0410844782.

The spelling of 2685857145 in words is "two billion, six hundred eighty-five million, eight hundred fifty-seven thousand, one hundred forty-five".