6406400968 has 16 divisors (see below), whose sum is σ = 13104002160. Its totient is φ = 2912000400.

The previous prime is 6406400951. The next prime is 6406400999. The reversal of 6406400968 is 8690046046.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36399918 + ... + 36400093.

It is an arithmetic number, because the mean of its divisors is an integer number (819000135).

Almost surely, 2^6406400968 is an apocalyptic number.

It is an amenable number.

6406400968 is an abundant number, since it is smaller than the sum of its proper divisors (6697601192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6406400968 is a wasteful number, since it uses less digits than its factorization.

6406400968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72800028 (or 72800024 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 6406400968 is about 80039.9960519739. The cubic root of 6406400968 is about 1857.2542993210.

The spelling of 6406400968 in words is "six billion, four hundred six million, four hundred thousand, nine hundred sixty-eight".