3671638 has 4 divisors (see below), whose sum is σ = 5507460. Its totient is φ = 1835818.

The previous prime is 3671627. The next prime is 3671663. The reversal of 3671638 is 8361763.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 917908 + ... + 917911.

It is an arithmetic number, because the mean of its divisors is an integer number (1376865).

Almost surely, 2^3671638 is an apocalyptic number.

3671638 is a deficient number, since it is larger than the sum of its proper divisors (1835822).

3671638 is a wasteful number, since it uses less digits than its factorization.

3671638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835821.

The product of its digits is 18144, while the sum is 34.

The square root of 3671638 is about 1916.1518728953. The cubic root of 3671638 is about 154.2718255347.

The spelling of 3671638 in words is "three million, six hundred seventy-one thousand, six hundred thirty-eight".