2685390 has 16 divisors (see below), whose sum is σ = 6445008. Its totient is φ = 716096.

The previous prime is 2685383. The next prime is 2685401. The reversal of 2685390 is 935862.

It is a happy number.

It is a super-2 number, since 2×2685390² = 14422638904200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 44727 + ... + 44786.

It is an arithmetic number, because the mean of its divisors is an integer number (402813).

2^2685390 is an apocalyptic number.

2685390 is an abundant number, since it is smaller than the sum of its proper divisors (3759618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2685390 is a wasteful number, since it uses less digits than its factorization.

2685390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89523.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2685390 is about 1638.7159607449. The cubic root of 2685390 is about 138.9960490915.

The spelling of 2685390 in words is "two million, six hundred eighty-five thousand, three hundred ninety".