1068640 has 24 divisors (see below), whose sum is σ = 2525040. Its totient is φ = 427392.

The previous prime is 1068631. The next prime is 1068677. The reversal of 1068640 is 468601.

It is a super-2 number, since 2×1068640² = 2283982899200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 3180 + ... + 3499.

It is an arithmetic number, because the mean of its divisors is an integer number (105210).

2^1068640 is an apocalyptic number.

1068640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1068640 is an abundant number, since it is smaller than the sum of its proper divisors (1456400).

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

1068640 is an equidigital number, since it uses as much as digits as its factorization.

1068640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6694 (or 6686 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1068640 is about 1033.7504534461. The cubic root of 1068640 is about 102.2375598354.

The spelling of 1068640 in words is "one million, sixty-eight thousand, six hundred forty".