2646684 has 36 divisors (see below), whose sum is σ = 6874504. Its totient is φ = 857952.

The previous prime is 2646671. The next prime is 2646733. The reversal of 2646684 is 4866462.

It is a happy number.

2646684 is a `hidden beast` number, since 2 + 646 + 6 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339 + ... + 2325.

2^2646684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3437252).

2646684 is an abundant number, since it is smaller than the sum of its proper divisors (4227820).

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

2646684 is a wasteful number, since it uses less digits than its factorization.

2646684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034 (or 2029 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 2646684 is about 1626.8632394888. The cubic root of 2646684 is about 138.3250058696.

The spelling of 2646684 in words is "two million, six hundred forty-six thousand, six hundred eighty-four".