7638213 has 8 divisors (see below), whose sum is σ = 11110176. Its totient is φ = 4629200.

The previous prime is 7638173. The next prime is 7638227. The reversal of 7638213 is 3128367.

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

It is a cyclic number.

It is not a de Polignac number, because 7638213 - 2⁶ = 7638149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115698 + ... + 115763.

It is an arithmetic number, because the mean of its divisors is an integer number (1388772).

Almost surely, 2^7638213 is an apocalyptic number.

It is an amenable number.

7638213 is a deficient number, since it is larger than the sum of its proper divisors (3471963).

7638213 is a wasteful number, since it uses less digits than its factorization.

7638213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231475.

The product of its digits is 6048, while the sum is 30.

The square root of 7638213 is about 2763.7317163574. The cubic root of 7638213 is about 196.9384830296.

The spelling of 7638213 in words is "seven million, six hundred thirty-eight thousand, two hundred thirteen".