2705684 has 6 divisors (see below), whose sum is σ = 4734954. Its totient is φ = 1352840.

The previous prime is 2705663. The next prime is 2705687. The reversal of 2705684 is 4865072.

It can be written as a sum of positive squares in only one way, i.e., 2371600 + 334084 = 1540^2 + 578^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2705684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338207 + ... + 338214.

It is an arithmetic number, because the mean of its divisors is an integer number (789159).

2^2705684 is an apocalyptic number.

It is an amenable number.

2705684 is a deficient number, since it is larger than the sum of its proper divisors (2029270).

2705684 is a wasteful number, since it uses less digits than its factorization.

2705684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676425 (or 676423 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2705684 is about 1644.8963493181. The cubic root of 2705684 is about 139.3453105602.

The spelling of 2705684 in words is "two million, seven hundred five thousand, six hundred eighty-four".