6651045 has 32 divisors (see below), whose sum is σ = 12451200. Its totient is φ = 3359232.

The previous prime is 6650993. The next prime is 6651049. The reversal of 6651045 is 5401566.

It is a happy number.

6651045 is a `hidden beast` number, since 6 + 651 + 0 + 4 + 5 = 666.

It is not a de Polignac number, because 6651045 - 2⁹ = 6650533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

6651045 is a modest number, since divided by 1045 gives 665 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651049) 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 31 ways as a sum of consecutive naturals, for example, 1269 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (389100).

Almost surely, 2^6651045 is an apocalyptic number.

It is an amenable number.

6651045 is a deficient number, since it is larger than the sum of its proper divisors (5800155).

6651045 is a wasteful number, since it uses less digits than its factorization.

6651045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626 (or 2620 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6651045 is about 2578.9620004955. The cubic root of 6651045 is about 188.0600852913.

The spelling of 6651045 in words is "six million, six hundred fifty-one thousand, forty-five".