451648 has 14 divisors (see below), whose sum is σ = 896366. Its totient is φ = 225792.

The previous prime is 451637. The next prime is 451657. The reversal of 451648 is 846154.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 64 = 672^2 + 8^2 .

It is an unprimeable number.

451648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3465 + ... + 3592.

2⁴⁵¹⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

451648 is a deficient number, since it is larger than the sum of its proper divisors (444718).

451648 is an equidigital number, since it uses as much as digits as its factorization.

451648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7069 (or 7059 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 451648 is about 672.0476173606. The cubic root of 451648 is about 76.7243757895.

The spelling of 451648 in words is "four hundred fifty-one thousand, six hundred forty-eight".