6446422236 has 96 divisors (see below), whose sum is σ = 16400240640. Its totient is φ = 1962537984.

The previous prime is 6446422231. The next prime is 6446422243. The reversal of 6446422236 is 6322246446.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 6446422194 and 6446422203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446422231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3614601 + ... + 3616383.

It is an arithmetic number, because the mean of its divisors is an integer number (170835840).

Almost surely, 2^6446422236 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 6446422236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8200120320).

6446422236 is an abundant number, since it is smaller than the sum of its proper divisors (9953818404).

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

6446422236 is a wasteful number, since it uses less digits than its factorization.

6446422236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2321 counting only the distinct ones).

The product of its digits is 331776, while the sum is 39.

The square root of 6446422236 is about 80289.6147456195. The cubic root of 6446422236 is about 1861.1137427312.

The spelling of 6446422236 in words is "six billion, four hundred forty-six million, four hundred twenty-two thousand, two hundred thirty-six".