2684605 has 32 divisors (see below), whose sum is σ = 4239360. Its totient is φ = 1581120.

The previous prime is 2684599. The next prime is 2684611. The reversal of 2684605 is 5064862.

2684605 = 105² + 106² + ... + 209².

It is an interprime number because it is at equal distance from previous prime (2684599) and next prime (2684611).

It is not a de Polignac number, because 2684605 - 2⁷ = 2684477 is a prime.

It is an Ulam number.

It is a congruent 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, 7132 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (132480).

2^2684605 is an apocalyptic number.

It is an amenable number.

2684605 is a deficient number, since it is larger than the sum of its proper divisors (1554755).

2684605 is a wasteful number, since it uses less digits than its factorization.

2684605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2684605 is about 1638.4764264401. The cubic root of 2684605 is about 138.9825038793.

The spelling of 2684605 in words is "two million, six hundred eighty-four thousand, six hundred five".