6744643 has 4 divisors (see below), whose sum is σ = 6761160. Its totient is φ = 6728128.

The previous prime is 6744613. The next prime is 6744653. The reversal of 6744643 is 3464476.

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 6744643 - 2⁵ = 6744611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6744599 and 6744608.

It is not an unprimeable number, because it can be changed into a prime (6744613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7630 + ... + 8467.

It is an arithmetic number, because the mean of its divisors is an integer number (1690290).

Almost surely, 2^6744643 is an apocalyptic number.

6744643 is a deficient number, since it is larger than the sum of its proper divisors (16517).

6744643 is a wasteful number, since it uses less digits than its factorization.

6744643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16516.

The product of its digits is 48384, while the sum is 34.

The square root of 6744643 is about 2597.0450515923. The cubic root of 6744643 is about 188.9381487186.

The spelling of 6744643 in words is "six million, seven hundred forty-four thousand, six hundred forty-three".