6446427 has 8 divisors (see below), whose sum is σ = 9256464. Its totient is φ = 3967008.

The previous prime is 6446413. The next prime is 6446437. The reversal of 6446427 is 7246446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6446427 - 2⁷ = 6446299 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6446437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82608 + ... + 82685.

It is an arithmetic number, because the mean of its divisors is an integer number (1157058).

Almost surely, 2^6446427 is an apocalyptic number.

6446427 is a deficient number, since it is larger than the sum of its proper divisors (2810037).

6446427 is a wasteful number, since it uses less digits than its factorization.

6446427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165309.

The product of its digits is 32256, while the sum is 33.

The square root of 6446427 is about 2538.9814887076. The cubic root of 6446427 is about 186.1114201195. Note that the first 3 decimals are identical.

The spelling of 6446427 in words is "six million, four hundred forty-six thousand, four hundred twenty-seven".