6340021344 has 72 divisors (see below), whose sum is σ = 19090005480. Its totient is φ = 1989024768.

The previous prime is 6340021343. The next prime is 6340021349. The reversal of 6340021344 is 4431200436.

6340021344 is a `hidden beast` number, since 6 + 3 + 400 + 213 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340021343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 642574 + ... + 652365.

It is an arithmetic number, because the mean of its divisors is an integer number (265138965).

Almost surely, 2^6340021344 is an apocalyptic number.

It is an amenable number.

6340021344 is an abundant number, since it is smaller than the sum of its proper divisors (12749984136).

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

6340021344 is a wasteful number, since it uses less digits than its factorization.

6340021344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294972 (or 1294961 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 6340021344 is about 79624.2509792086. The cubic root of 6340021344 is about 1850.8173981279.

The spelling of 6340021344 in words is "six billion, three hundred forty million, twenty-one thousand, three hundred forty-four".