2671638 has 16 divisors (see below), whose sum is σ = 5434560. Its totient is φ = 875336.

The previous prime is 2671631. The next prime is 2671649. The reversal of 2671638 is 8361762.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2671599 and 2671608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2671631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (339660).

2^2671638 is an apocalyptic number.

2671638 is an abundant number, since it is smaller than the sum of its proper divisors (2762922).

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

2671638 is a wasteful number, since it uses less digits than its factorization.

2671638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611.

The product of its digits is 12096, while the sum is 33.

The square root of 2671638 is about 1634.5146068482. The cubic root of 2671638 is about 138.7583746264.

The spelling of 2671638 in words is "two million, six hundred seventy-one thousand, six hundred thirty-eight".