6446612063 has 16 divisors (see below), whose sum is σ = 6831806976. Its totient is φ = 6070421280.

The previous prime is 6446612047. The next prime is 6446612089. The reversal of 6446612063 is 3602166446.

It is a happy number.

It is not a de Polignac number, because 6446612063 - 2⁴ = 6446612047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446612023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1259756 + ... + 1264862.

It is an arithmetic number, because the mean of its divisors is an integer number (426987936).

Almost surely, 2^6446612063 is an apocalyptic number.

6446612063 is a deficient number, since it is larger than the sum of its proper divisors (385194913).

6446612063 is a wasteful number, since it uses less digits than its factorization.

6446612063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5974.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 6446612063 is about 80290.7968761053. The cubic root of 6446612063 is about 1861.1320105475.

The spelling of 6446612063 in words is "six billion, four hundred forty-six million, six hundred twelve thousand, sixty-three".