6651375 has 16 divisors (see below), whose sum is σ = 11068512. Its totient is φ = 3547200.

The previous prime is 6651367. The next prime is 6651377. The reversal of 6651375 is 5731566.

It is not a de Polignac number, because 6651375 - 2³ = 6651367 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

6651375 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8494 + ... + 9243.

It is an arithmetic number, because the mean of its divisors is an integer number (691782).

Almost surely, 2^6651375 is an apocalyptic number.

6651375 is a deficient number, since it is larger than the sum of its proper divisors (4417137).

6651375 is a wasteful number, since it uses less digits than its factorization.

6651375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17755 (or 17745 counting only the distinct ones).

The product of its digits is 18900, while the sum is 33.

The square root of 6651375 is about 2579.0259789308. The cubic root of 6651375 is about 188.0631955194.

The spelling of 6651375 in words is "six million, six hundred fifty-one thousand, three hundred seventy-five".