6744538 has 4 divisors (see below), whose sum is σ = 10116810. Its totient is φ = 3372268.

The previous prime is 6744527. The next prime is 6744539. The reversal of 6744538 is 8354476.

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

It can be written as a sum of positive squares in only one way, i.e., 4592449 + 2152089 = 2143^2 + 1467^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6744497 and 6744506.

It is not an unprimeable number, because it can be changed into a prime (6744539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1686133 + ... + 1686136.

Almost surely, 2^6744538 is an apocalyptic number.

6744538 is a deficient number, since it is larger than the sum of its proper divisors (3372272).

6744538 is a wasteful number, since it uses less digits than its factorization.

6744538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372271.

The product of its digits is 80640, while the sum is 37.

The square root of 6744538 is about 2597.0248362309. The cubic root of 6744538 is about 188.9371682561.

The spelling of 6744538 in words is "six million, seven hundred forty-four thousand, five hundred thirty-eight".