6446220115 has 8 divisors (see below), whose sum is σ = 7735971600. Its totient is φ = 5156637792.

The previous prime is 6446220107. The next prime is 6446220119. The reversal of 6446220115 is 5110226446.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6446220115 - 2³ = 6446220107 is a prime.

It is a super-2 number, since 2×6446220115² = 83107507542061226450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6446220119) 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, 67432 + ... + 132058.

It is an arithmetic number, because the mean of its divisors is an integer number (966996450).

Almost surely, 2^6446220115 is an apocalyptic number.

6446220115 is a deficient number, since it is larger than the sum of its proper divisors (1289751485).

6446220115 is a wasteful number, since it uses less digits than its factorization.

6446220115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84581.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6446220115 is about 80288.3560362273. The cubic root of 6446220115 is about 1861.0942914197.

The spelling of 6446220115 in words is "six billion, four hundred forty-six million, two hundred twenty thousand, one hundred fifteen".