3678638 has 8 divisors (see below), whose sum is σ = 5528088. Its totient is φ = 1835944.

The previous prime is 3678617. The next prime is 3678659. The reversal of 3678638 is 8368763.

It is an interprime number because it is at equal distance from previous prime (3678617) and next prime (3678659).

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 = 3678595 and 3678604.

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, 20 + ... + 2712.

It is an arithmetic number, because the mean of its divisors is an integer number (691011).

Almost surely, 2^3678638 is an apocalyptic number.

3678638 is a deficient number, since it is larger than the sum of its proper divisors (1849450).

3678638 is a wasteful number, since it uses less digits than its factorization.

3678638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378.

The product of its digits is 145152, while the sum is 41.

The square root of 3678638 is about 1917.9775806823. The cubic root of 3678638 is about 154.3698033513.

The spelling of 3678638 in words is "three million, six hundred seventy-eight thousand, six hundred thirty-eight".