6379280640 has 108 divisors (see below), whose sum is σ = 22071686364. Its totient is φ = 1701138432.

The previous prime is 6379280603. The next prime is 6379280653. The reversal of 6379280640 is 460829736.

6379280640 is a `hidden beast` number, since 637 + 9 + 2 + 8 + 0 + 6 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3273670656 + 3105609984 = 57216^2 + 55728^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265359 + ... + 288398.

Almost surely, 2^6379280640 is an apocalyptic number.

6379280640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6379280640 is an abundant number, since it is smaller than the sum of its proper divisors (15692405724).

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

6379280640 is a wasteful number, since it uses less digits than its factorization.

6379280640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553784 (or 553767 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 6379280640 is about 79870.3990224163. The cubic root of 6379280640 is about 1854.6298101506.

The spelling of 6379280640 in words is "six billion, three hundred seventy-nine million, two hundred eighty thousand, six hundred forty".