2685404 has 18 divisors (see below), whose sum is σ = 4809840. Its totient is φ = 1311856.

The previous prime is 2685401. The next prime is 2685407. The reversal of 2685404 is 4045862.

It is an interprime number because it is at equal distance from previous prime (2685401) and next prime (2685407).

It is a super-2 number, since 2×2685404² = 14422789286432, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 2685404 parts by 2317 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11117 + ... + 11355.

2^2685404 is an apocalyptic number.

It is an amenable number.

2685404 is a deficient number, since it is larger than the sum of its proper divisors (2124436).

2685404 is a wasteful number, since it uses less digits than its factorization.

2685404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2685404 is about 1638.7202323765. The cubic root of 2685404 is about 138.9962906382.

The spelling of 2685404 in words is "two million, six hundred eighty-five thousand, four hundred four".