6400634412 has 24 divisors (see below), whose sum is σ = 14940676800. Its totient is φ = 2132707216.

The previous prime is 6400634407. The next prime is 6400634467. The reversal of 6400634412 is 2144360046.

It is a self number, because there is not a number n which added to its sum of digits gives 6400634412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72462 + ... + 134357.

It is an arithmetic number, because the mean of its divisors is an integer number (622528200).

Almost surely, 2^6400634412 is an apocalyptic number.

It is an amenable number.

6400634412 is an abundant number, since it is smaller than the sum of its proper divisors (8540042388).

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

6400634412 is a wasteful number, since it uses less digits than its factorization.

6400634412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209405 (or 209403 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 6400634412 is about 80003.9649767435. The cubic root of 6400634412 is about 1856.6968789110.

Adding to 6400634412 its reverse (2144360046), we get a palindrome (8544994458).

It can be divided in two parts, 6400634 and 412, that added together give a palindrome (6401046).

The spelling of 6400634412 in words is "six billion, four hundred million, six hundred thirty-four thousand, four hundred twelve".