6424564878 has 24 divisors (see below), whose sum is σ = 13922029368. Its totient is φ = 2141192592.

The previous prime is 6424564847. The next prime is 6424564879. The reversal of 6424564878 is 8784654246.

It is a happy number.

6424564878 is a `hidden beast` number, since 6 + 4 + 2 + 4 + 564 + 8 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6424564879) 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, 112200 + ... + 159492.

It is an arithmetic number, because the mean of its divisors is an integer number (580084557).

Almost surely, 2^6424564878 is an apocalyptic number.

6424564878 is an abundant number, since it is smaller than the sum of its proper divisors (7497464490).

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

6424564878 is a wasteful number, since it uses less digits than its factorization.

6424564878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54848 (or 54845 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 54.

The square root of 6424564878 is about 80153.3834469887. The cubic root of 6424564878 is about 1859.0079187382.

The spelling of 6424564878 in words is "six billion, four hundred twenty-four million, five hundred sixty-four thousand, eight hundred seventy-eight".