6343645 has 16 divisors (see below), whose sum is σ = 9491328. Its totient is φ = 3954240.

The previous prime is 6343639. The next prime is 6343651. The reversal of 6343645 is 5463436.

It is an interprime number because it is at equal distance from previous prime (6343639) and next prime (6343651).

It is not a de Polignac number, because 6343645 - 2⁹ = 6343133 is a prime.

6343645 is a lucky 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 15 ways as a sum of consecutive naturals, for example, 7854 + ... + 8623.

It is an arithmetic number, because the mean of its divisors is an integer number (593208).

Almost surely, 2^6343645 is an apocalyptic number.

It is an amenable number.

6343645 is a deficient number, since it is larger than the sum of its proper divisors (3147683).

6343645 is a wasteful number, since it uses less digits than its factorization.

6343645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500.

The product of its digits is 25920, while the sum is 31.

The square root of 6343645 is about 2518.6593656150. The cubic root of 6343645 is about 185.1169944166.

The spelling of 6343645 in words is "six million, three hundred forty-three thousand, six hundred forty-five".