6440768232 has 32 divisors (see below), whose sum is σ = 16103966400. Its totient is φ = 2146649984.

The previous prime is 6440768231. The next prime is 6440768233. The reversal of 6440768232 is 2328670446.

It is an interprime number because it is at equal distance from previous prime (6440768231) and next prime (6440768233).

It is not an unprimeable number, because it can be changed into a prime (6440768231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285013 + ... + 306779.

It is an arithmetic number, because the mean of its divisors is an integer number (503248950).

Almost surely, 2^6440768232 is an apocalyptic number.

It is an amenable number.

6440768232 is an abundant number, since it is smaller than the sum of its proper divisors (9663198168).

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

6440768232 is a wasteful number, since it uses less digits than its factorization.

6440768232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34105 (or 34101 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 6440768232 is about 80254.3969636555. The cubic root of 6440768232 is about 1860.5694706747.

The spelling of 6440768232 in words is "six billion, four hundred forty million, seven hundred sixty-eight thousand, two hundred thirty-two".