6406223405 has 16 divisors (see below), whose sum is σ = 7816049904. Its totient is φ = 5039677440.

The previous prime is 6406223399. The next prime is 6406223423. The reversal of 6406223405 is 5043226046.

It can be written as a sum of positive squares in 8 ways, for example, as 957716809 + 5448506596 = 30947^2 + 73814^2 .

It is not a de Polignac number, because 6406223405 - 2⁸ = 6406223149 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 96965 + ... + 149045.

It is an arithmetic number, because the mean of its divisors is an integer number (488503119).

Almost surely, 2^6406223405 is an apocalyptic number.

It is an amenable number.

6406223405 is a deficient number, since it is larger than the sum of its proper divisors (1409826499).

6406223405 is a wasteful number, since it uses less digits than its factorization.

6406223405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52496.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 6406223405 is about 80038.8868300903. The cubic root of 6406223405 is about 1857.2371403007.

The spelling of 6406223405 in words is "six billion, four hundred six million, two hundred twenty-three thousand, four hundred five".