2871206685 has 24 divisors (see below), whose sum is σ = 4980104064. Its totient is φ = 1530280800.

The previous prime is 2871206669. The next prime is 2871206699. The reversal of 2871206685 is 5866021782.

It is not a de Polignac number, because 2871206685 - 2⁴ = 2871206669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2871206685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48760 + ... + 90110.

It is an arithmetic number, because the mean of its divisors is an integer number (207504336).

Almost surely, 2^2871206685 is an apocalyptic number.

It is an amenable number.

2871206685 is a deficient number, since it is larger than the sum of its proper divisors (2108897379).

2871206685 is a wasteful number, since it uses less digits than its factorization.

2871206685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42905 (or 42902 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2871206685 is about 53583.6419534917. The cubic root of 2871206685 is about 1421.3078417387.

The spelling of 2871206685 in words is "two billion, eight hundred seventy-one million, two hundred six thousand, six hundred eighty-five".