6446016 has 126 divisors (see below), whose sum is σ = 20128992. Its totient is φ = 1969920.

The previous prime is 6445993. The next prime is 6446017. The reversal of 6446016 is 6106446.

6446016 is a `hidden beast` number, since 644 + 6 + 0 + 16 = 666.

It is a super-2 number, since 2×6446016² = 83102244544512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446017) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 207921 + ... + 207951.

Almost surely, 2^6446016 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 6446016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10064496).

6446016 is an abundant number, since it is smaller than the sum of its proper divisors (13682976).

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

6446016 is a wasteful number, since it uses less digits than its factorization.

6446016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6446016 is about 2538.9005494505. The cubic root of 6446016 is about 186.1074647801.

The spelling of 6446016 in words is "six million, four hundred forty-six thousand, sixteen".