7638243 has 8 divisors (see below), whose sum is σ = 10459728. Its totient is φ = 4954464.

The previous prime is 7638233. The next prime is 7638269. The reversal of 7638243 is 3428367.

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

It is not a de Polignac number, because 7638243 - 2⁴ = 7638227 is a prime.

It is a super-2 number, since 2×7638243² = 116685512254098, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁶ + 6⁸ + 3⁶ + 8³ + 2¹³ + 4¹⁰ + 3¹⁴ .

It is not an unprimeable number, because it can be changed into a prime (7638233) 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, 34296 + ... + 34517.

It is an arithmetic number, because the mean of its divisors is an integer number (1307466).

Almost surely, 2^7638243 is an apocalyptic number.

7638243 is a deficient number, since it is larger than the sum of its proper divisors (2821485).

7638243 is a wasteful number, since it uses less digits than its factorization.

7638243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68853.

The product of its digits is 24192, while the sum is 33.

The square root of 7638243 is about 2763.7371437964. The cubic root of 7638243 is about 196.9387408625.

The spelling of 7638243 in words is "seven million, six hundred thirty-eight thousand, two hundred forty-three".