6643250345 has 8 divisors (see below), whose sum is σ = 8391474240. Its totient is φ = 5034884400.

The previous prime is 6643250279. The next prime is 6643250357. The reversal of 6643250345 is 5430523466.

It is a happy number.

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

It is not a de Polignac number, because 6643250345 - 2¹² = 6643246249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6643250299 and 6643250308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34964381 + ... + 34964570.

It is an arithmetic number, because the mean of its divisors is an integer number (1048934280).

Almost surely, 2^6643250345 is an apocalyptic number.

It is an amenable number.

6643250345 is a deficient number, since it is larger than the sum of its proper divisors (1748223895).

6643250345 is a wasteful number, since it uses less digits than its factorization.

6643250345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69928975.

The product of its (nonzero) digits is 259200, while the sum is 38.

The square root of 6643250345 is about 81506.1368548406. The cubic root of 6643250345 is about 1879.8659125168.

The spelling of 6643250345 in words is "six billion, six hundred forty-three million, two hundred fifty thousand, three hundred forty-five".