2785772885 has 8 divisors (see below), whose sum is σ = 3820488576. Its totient is φ = 1910244240.

The previous prime is 2785772879. The next prime is 2785772887. The reversal of 2785772885 is 5882775872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2785772885 - 2¹⁶ = 2785707349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785772887) 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, 39796721 + ... + 39796790.

It is an arithmetic number, because the mean of its divisors is an integer number (477561072).

Almost surely, 2^2785772885 is an apocalyptic number.

It is an amenable number.

2785772885 is a deficient number, since it is larger than the sum of its proper divisors (1034715691).

2785772885 is an equidigital number, since it uses as much as digits as its factorization.

2785772885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79593523.

The product of its digits is 17561600, while the sum is 59.

The square root of 2785772885 is about 52780.4214174158. The cubic root of 2785772885 is about 1407.0684838917.

The spelling of 2785772885 in words is "two billion, seven hundred eighty-five million, seven hundred seventy-two thousand, eight hundred eighty-five".