6641223345 has 32 divisors (see below), whose sum is σ = 11832013440. Its totient is φ = 3534367680.

The previous prime is 6641223331. The next prime is 6641223367. The reversal of 6641223345 is 5433221466.

6641223345 is a `hidden beast` number, since 6 + 6 + 412 + 233 + 4 + 5 = 666.

It is not a de Polignac number, because 6641223345 - 2⁸ = 6641223089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10375 + ... + 115715.

It is an arithmetic number, because the mean of its divisors is an integer number (369750420).

Almost surely, 2^6641223345 is an apocalyptic number.

It is an amenable number.

6641223345 is a deficient number, since it is larger than the sum of its proper divisors (5190790095).

6641223345 is a wasteful number, since it uses less digits than its factorization.

6641223345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105822 (or 105816 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 6641223345 is about 81493.7012596679. The cubic root of 6641223345 is about 1879.6746970913.

The spelling of 6641223345 in words is "six billion, six hundred forty-one million, two hundred twenty-three thousand, three hundred forty-five".