7638671 has 4 divisors (see below), whose sum is σ = 7768200. Its totient is φ = 7509144.

The previous prime is 7638643. The next prime is 7638689. The reversal of 7638671 is 1768367.

7638671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7638671 - 2¹⁰ = 7637647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64676 + ... + 64793.

It is an arithmetic number, because the mean of its divisors is an integer number (1942050).

Almost surely, 2^7638671 is an apocalyptic number.

7638671 is a deficient number, since it is larger than the sum of its proper divisors (129529).

7638671 is a wasteful number, since it uses less digits than its factorization.

7638671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129528.

The product of its digits is 42336, while the sum is 38.

The square root of 7638671 is about 2763.8145740986. The cubic root of 7638671 is about 196.9424192043.

The spelling of 7638671 in words is "seven million, six hundred thirty-eight thousand, six hundred seventy-one".