6661343 has 16 divisors (see below), whose sum is σ = 7644000. Its totient is φ = 5754240.

The previous prime is 6661337. The next prime is 6661349. The reversal of 6661343 is 3431666.

It is an interprime number because it is at equal distance from previous prime (6661337) and next prime (6661349).

It is a cyclic number.

It is not a de Polignac number, because 6661343 - 2⁴ = 6661327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661349) 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, 36713 + ... + 36893.

It is an arithmetic number, because the mean of its divisors is an integer number (477750).

Almost surely, 2^6661343 is an apocalyptic number.

6661343 is a deficient number, since it is larger than the sum of its proper divisors (982657).

6661343 is a wasteful number, since it uses less digits than its factorization.

6661343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its digits is 7776, while the sum is 29.

The square root of 6661343 is about 2580.9577679613. The cubic root of 6661343 is about 188.1570948137.

The spelling of 6661343 in words is "six million, six hundred sixty-one thousand, three hundred forty-three".