6446006446 has 32 divisors (see below), whose sum is σ = 10689882336. Its totient is φ = 2890800000.

The previous prime is 6446006423. The next prime is 6446006453.

It is a happy number.

6446006446 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6446006399 and 6446006408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646096 + ... + 655996.

It is an arithmetic number, because the mean of its divisors is an integer number (334058823).

Almost surely, 2^6446006446 is an apocalyptic number.

6446006446 is a deficient number, since it is larger than the sum of its proper divisors (4243875890).

6446006446 is a wasteful number, since it uses less digits than its factorization.

6446006446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308.

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 6446006446 is about 80287.0253901588. The cubic root of 6446006446 is about 1861.0737283329.

It can be divided in two parts, 644600 and 6446, that multiplied together give a square (4155091600 = 64460²).

The spelling of 6446006446 in words is "six billion, four hundred forty-six million, six thousand, four hundred forty-six".