6761645 has 8 divisors (see below), whose sum is σ = 8851680. Its totient is φ = 4917520.

The previous prime is 6761633. The next prime is 6761659. The reversal of 6761645 is 5461676.

6761645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6761645 - 2¹⁴ = 6745261 is a prime.

It is a super-3 number, since 3×6761645³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61415 + ... + 61524.

It is an arithmetic number, because the mean of its divisors is an integer number (1106460).

Almost surely, 2^6761645 is an apocalyptic number.

It is an amenable number.

6761645 is a deficient number, since it is larger than the sum of its proper divisors (2090035).

6761645 is a wasteful number, since it uses less digits than its factorization.

6761645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122955.

The product of its digits is 30240, while the sum is 35.

The square root of 6761645 is about 2600.3163269110. The cubic root of 6761645 is about 189.0967749029.

The spelling of 6761645 in words is "six million, seven hundred sixty-one thousand, six hundred forty-five".