1000648 has 32 divisors (see below), whose sum is σ = 2086560. Its totient is φ = 446080.

The previous prime is 1000639. The next prime is 1000651. The reversal of 1000648 is 8460001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7236 + ... + 7372.

It is an arithmetic number, because the mean of its divisors is an integer number (65205).

2^1000648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043280).

1000648 is an abundant number, since it is smaller than the sum of its proper divisors (1085912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000648 is a wasteful number, since it uses less digits than its factorization.

1000648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1000648 is about 1000.3239475290. The cubic root of 1000648 is about 100.0215953361.

Adding to 1000648 its reverse (8460001), we get a palindrome (9460649).

The spelling of 1000648 in words is "one million, six hundred forty-eight", and thus it is an aban number.