6406943 has 8 divisors (see below), whose sum is σ = 6814368. Its totient is φ = 6002944.

The previous prime is 6406937. The next prime is 6406951. The reversal of 6406943 is 3496046.

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 6406943 - 2⁶ = 6406879 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3755 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (851796).

Almost surely, 2^6406943 is an apocalyptic number.

6406943 is a deficient number, since it is larger than the sum of its proper divisors (407425).

6406943 is a wasteful number, since it uses less digits than its factorization.

6406943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6406943 is about 2531.1939870346. The cubic root of 6406943 is about 185.7306677293.

The spelling of 6406943 in words is "six million, four hundred six thousand, nine hundred forty-three".