6406621343 has 16 divisors (see below), whose sum is σ = 7150590720. Its totient is φ = 5704338816.

The previous prime is 6406621327. The next prime is 6406621421. The reversal of 6406621343 is 3431266046.

It is a cyclic number.

It is not a de Polignac number, because 6406621343 - 2⁴ = 6406621327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406627343) 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, 221180 + ... + 248462.

It is an arithmetic number, because the mean of its divisors is an integer number (446911920).

Almost surely, 2^6406621343 is an apocalyptic number.

6406621343 is a deficient number, since it is larger than the sum of its proper divisors (743969377).

6406621343 is a wasteful number, since it uses less digits than its factorization.

6406621343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28046.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 6406621343 is about 80041.3726956254. The cubic root of 6406621343 is about 1857.2755950909.

Adding to 6406621343 its reverse (3431266046), we get a palindrome (9837887389).

The spelling of 6406621343 in words is "six billion, four hundred six million, six hundred twenty-one thousand, three hundred forty-three".