6456646 has 16 divisors (see below), whose sum is σ = 11102976. Its totient is φ = 2758536.

The previous prime is 6456641. The next prime is 6456661. The reversal of 6456646 is 6466546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6345 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (693936).

Almost surely, 2^6456646 is an apocalyptic number.

6456646 is a deficient number, since it is larger than the sum of its proper divisors (4646330).

6456646 is a wasteful number, since it uses less digits than its factorization.

6456646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 103680, while the sum is 37.

The square root of 6456646 is about 2540.9931129383. The cubic root of 6456646 is about 186.2097106673.

The spelling of 6456646 in words is "six million, four hundred fifty-six thousand, six hundred forty-six".