6744520 has 32 divisors (see below), whose sum is σ = 15837120. Its totient is φ = 2580160.

The previous prime is 6744511. The next prime is 6744523. The reversal of 6744520 is 254476.

6744520 = T₁₆₄₀ + T₁₆₄₁ + ... + T₁₆₄₄.

It is not an unprimeable number, because it can be changed into a prime (6744523) 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, 2746 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (494910).

Almost surely, 2^6744520 is an apocalyptic number.

It is an amenable number.

6744520 is an abundant number, since it is smaller than the sum of its proper divisors (9092600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6744520 is a wasteful number, since it uses less digits than its factorization.

6744520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7365 (or 7361 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 6744520 is about 2597.0213707245. The cubic root of 6744520 is about 188.9370001758.

Adding to 6744520 its reverse (254476), we get a palindrome (6998996).

The spelling of 6744520 in words is "six million, seven hundred forty-four thousand, five hundred twenty".