6741645 has 16 divisors (see below), whose sum is σ = 11256192. Its totient is φ = 3439040.

The previous prime is 6741641. The next prime is 6741689. The reversal of 6741645 is 5461476.

It is not a de Polignac number, because 6741645 - 2² = 6741641 is a prime.

It is a super-3 number, since 3×6741645³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

6741645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6741641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9426 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (703512).

Almost surely, 2^6741645 is an apocalyptic number.

It is an amenable number.

6741645 is a deficient number, since it is larger than the sum of its proper divisors (4514547).

6741645 is a wasteful number, since it uses less digits than its factorization.

6741645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19572.

The product of its digits is 20160, while the sum is 33.

The square root of 6741645 is about 2596.4677929834. The cubic root of 6741645 is about 188.9101501763.

The spelling of 6741645 in words is "six million, seven hundred forty-one thousand, six hundred forty-five".