2686404 has 24 divisors (see below), whose sum is σ = 7163968. Its totient is φ = 767520.

The previous prime is 2686393. The next prime is 2686451. The reversal of 2686404 is 4046862.

It is a d-powerful number, because it can be written as 2²¹ + 6⁶ + 8³ + 6⁷ + 4 + 0 + 4⁹ .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15907 + ... + 16074.

2^2686404 is an apocalyptic number.

It is an amenable number.

2686404 is an abundant number, since it is smaller than the sum of its proper divisors (4477564).

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

2686404 is a wasteful number, since it uses less digits than its factorization.

2686404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31995 (or 31993 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2686404 is about 1639.0253201217. The cubic root of 2686404 is about 139.0135418030.

The spelling of 2686404 in words is "two million, six hundred eighty-six thousand, four hundred four".