6643150 has 12 divisors (see below), whose sum is σ = 12356352. Its totient is φ = 2657240.

The previous prime is 6643139. The next prime is 6643151. The reversal of 6643150 is 513466.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66382 + ... + 66481.

It is an arithmetic number, because the mean of its divisors is an integer number (1029696).

Almost surely, 2^6643150 is an apocalyptic number.

6643150 is a deficient number, since it is larger than the sum of its proper divisors (5713202).

6643150 is a wasteful number, since it uses less digits than its factorization.

6643150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132875 (or 132870 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6643150 is about 2577.4308914111. The cubic root of 6643150 is about 187.9856447467.

The spelling of 6643150 in words is "six million, six hundred forty-three thousand, one hundred fifty".