6743645 has 8 divisors (see below), whose sum is σ = 8568504. Its totient is φ = 5077504.

The previous prime is 6743629. The next prime is 6743663. The reversal of 6743645 is 5463476.

It can be written as a sum of positive squares in 4 ways, for example, as 383161 + 6360484 = 619^2 + 2522^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6743645 - 2⁴ = 6743629 is a prime.

It is a d-powerful number, because it can be written as 6 + 7⁴ + 4⁷ + 3¹⁴ + 6⁸ + 4⁹ + 5³ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39584 + ... + 39753.

It is an arithmetic number, because the mean of its divisors is an integer number (1071063).

Almost surely, 2^6743645 is an apocalyptic number.

It is an amenable number.

6743645 is a deficient number, since it is larger than the sum of its proper divisors (1824859).

6743645 is a wasteful number, since it uses less digits than its factorization.

6743645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79359.

The product of its digits is 60480, while the sum is 35.

The square root of 6743645 is about 2596.8529030347. The cubic root of 6743645 is about 188.9288292447.

The spelling of 6743645 in words is "six million, seven hundred forty-three thousand, six hundred forty-five".