6442474860 has 96 divisors (see below), whose sum is σ = 20187686400. Its totient is φ = 1705613760.

The previous prime is 6442474813. The next prime is 6442474867. The reversal of 6442474860 is 684742446.

6442474860 is a `hidden beast` number, since 64 + 42 + 474 + 86 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (6442474867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32145 + ... + 117975.

It is an arithmetic number, because the mean of its divisors is an integer number (210288400).

Almost surely, 2^6442474860 is an apocalyptic number.

6442474860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6442474860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10093843200).

6442474860 is an abundant number, since it is smaller than the sum of its proper divisors (13745211540).

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

6442474860 is a wasteful number, since it uses less digits than its factorization.

6442474860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85988 (or 85980 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 45.

The square root of 6442474860 is about 80265.0288731026. The cubic root of 6442474860 is about 1860.7337895585.

The spelling of 6442474860 in words is "six billion, four hundred forty-two million, four hundred seventy-four thousand, eight hundred sixty".