2705985 has 12 divisors (see below), whose sum is σ = 4690452. Its totient is φ = 1443168.

The previous prime is 2705981. The next prime is 2705993. The reversal of 2705985 is 5895072.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 1640961 = 1032^2 + 1281^2 .

It is not a de Polignac number, because 2705985 - 2² = 2705981 is a prime.

It is an Ulam number.

It is a Curzon number.

2705985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2705981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30022 + ... + 30111.

It is an arithmetic number, because the mean of its divisors is an integer number (390871).

2^2705985 is an apocalyptic number.

It is an amenable number.

2705985 is a deficient number, since it is larger than the sum of its proper divisors (1984467).

2705985 is a wasteful number, since it uses less digits than its factorization.

2705985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60144 (or 60141 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 2705985 is about 1644.9878419004. The cubic root of 2705985 is about 139.3504776311.

The spelling of 2705985 in words is "two million, seven hundred five thousand, nine hundred eighty-five".