6427989648 has 120 divisors (see below), whose sum is σ = 18330645216. Its totient is φ = 2102284800.

The previous prime is 6427989563. The next prime is 6427989671. The reversal of 6427989648 is 8469897246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2709903 + ... + 2712273.

Almost surely, 2^6427989648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6427989648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9165322608).

6427989648 is an abundant number, since it is smaller than the sum of its proper divisors (11902655568).

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

6427989648 is a wasteful number, since it uses less digits than its factorization.

6427989648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2724 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The square root of 6427989648 is about 80174.7444523523. The cubic root of 6427989648 is about 1859.3381897994.

The spelling of 6427989648 in words is "six billion, four hundred twenty-seven million, nine hundred eighty-nine thousand, six hundred forty-eight".