2684638 has 8 divisors (see below), whose sum is σ = 4393080. Its totient is φ = 1220280.

The previous prime is 2684611. The next prime is 2684641. The reversal of 2684638 is 8364862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2684597 and 2684606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60993 + ... + 61036.

It is an arithmetic number, because the mean of its divisors is an integer number (549135).

2^2684638 is an apocalyptic number.

2684638 is a deficient number, since it is larger than the sum of its proper divisors (1708442).

2684638 is a wasteful number, since it uses less digits than its factorization.

2684638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122042.

The product of its digits is 55296, while the sum is 37.

The square root of 2684638 is about 1638.4864967402. The cubic root of 2684638 is about 138.9830733490.

The spelling of 2684638 in words is "two million, six hundred eighty-four thousand, six hundred thirty-eight".