6400646462 has 24 divisors (see below), whose sum is σ = 11283630624. Its totient is φ = 2714850432.

The previous prime is 6400646453. The next prime is 6400646501. The reversal of 6400646462 is 2646460046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327158 + ... + 346169.

It is an arithmetic number, because the mean of its divisors is an integer number (470151276).

Almost surely, 2^6400646462 is an apocalyptic number.

6400646462 is a deficient number, since it is larger than the sum of its proper divisors (4882984162).

6400646462 is a wasteful number, since it uses less digits than its factorization.

6400646462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673440 (or 673433 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The square root of 6400646462 is about 80004.0402854756. The cubic root of 6400646462 is about 1856.6980440654.

The spelling of 6400646462 in words is "six billion, four hundred million, six hundred forty-six thousand, four hundred sixty-two".