2685724 has 6 divisors (see below), whose sum is σ = 4700024. Its totient is φ = 1342860.

The previous prime is 2685703. The next prime is 2685731. The reversal of 2685724 is 4275862.

It is a super-2 number, since 2×2685724² = 14426226808352, which contains 22 as substring.

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 2685724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335712 + ... + 335719.

2^2685724 is an apocalyptic number.

It is an amenable number.

2685724 is a deficient number, since it is larger than the sum of its proper divisors (2014300).

2685724 is a wasteful number, since it uses less digits than its factorization.

2685724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671435 (or 671433 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 2685724 is about 1638.8178666344. The cubic root of 2685724 is about 139.0018114768.

The spelling of 2685724 in words is "two million, six hundred eighty-five thousand, seven hundred twenty-four".