7638043 has 4 divisors (see below), whose sum is σ = 8729200. Its totient is φ = 6546888.

The previous prime is 7638031. The next prime is 7638053. The reversal of 7638043 is 3408367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3408367 = 271 ⋅12577.

It is a cyclic number.

It is not a de Polignac number, because 7638043 - 2⁵ = 7638011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7637996 and 7638014.

It is not an unprimeable number, because it can be changed into a prime (7638023) 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 3 ways as a sum of consecutive naturals, for example, 545568 + ... + 545581.

It is an arithmetic number, because the mean of its divisors is an integer number (2182300).

Almost surely, 2^7638043 is an apocalyptic number.

7638043 is a deficient number, since it is larger than the sum of its proper divisors (1091157).

7638043 is a wasteful number, since it uses less digits than its factorization.

7638043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091156.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 7638043 is about 2763.7009606685. The cubic root of 7638043 is about 196.9370219640.

The spelling of 7638043 in words is "seven million, six hundred thirty-eight thousand, forty-three".