2685997 has 4 divisors (see below), whose sum is σ = 2689276. Its totient is φ = 2682720.

The previous prime is 2685989. The next prime is 2686007. The reversal of 2685997 is 7995862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1473796 + 1212201 = 1214^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 2685997 - 2³ = 2685989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (672319).

2^2685997 is an apocalyptic number.

It is an amenable number.

2685997 is a deficient number, since it is larger than the sum of its proper divisors (3279).

2685997 is a wasteful number, since it uses less digits than its factorization.

2685997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278.

The product of its digits is 272160, while the sum is 46.

The square root of 2685997 is about 1638.9011562629. The cubic root of 2685997 is about 139.0065210956.

The spelling of 2685997 in words is "two million, six hundred eighty-five thousand, nine hundred ninety-seven".