6816506424 has 384 divisors, whose sum is σ = 23227545600. Its totient is φ = 1646023680.

The previous prime is 6816506423. The next prime is 6816506441. The reversal of 6816506424 is 4246056186.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6816506423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9004254 + ... + 9005010.

It is an arithmetic number, because the mean of its divisors is an integer number (60488400).

Almost surely, 2^6816506424 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 6816506424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11613772800).

6816506424 is an abundant number, since it is smaller than the sum of its proper divisors (16411039176).

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

6816506424 is a wasteful number, since it uses less digits than its factorization.

6816506424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 6816506424 is about 82562.1367456051. The cubic root of 6816506424 is about 1896.0681779504.

The spelling of 6816506424 in words is "six billion, eight hundred sixteen million, five hundred six thousand, four hundred twenty-four".