1068641 has 12 divisors (see below), whose sum is σ = 1260612. Its totient is φ = 903168.

The previous prime is 1068631. The next prime is 1068677. The reversal of 1068641 is 1468601.

1068641 = 123² + 124² + ... + 171².

It can be written as a sum of positive squares in 2 ways, for example, as 108241 + 960400 = 329^2 + 980^2 .

It is not a de Polignac number, because 1068641 - 2⁶ = 1068577 is a prime.

It is a super-2 number, since 2×1068641² = 2283987173762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1068641.

It is not an unprimeable number, because it can be changed into a prime (1068611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5441 + ... + 5633.

It is an arithmetic number, because the mean of its divisors is an integer number (105051).

2^1068641 is an apocalyptic number.

It is an amenable number.

1068641 is a deficient number, since it is larger than the sum of its proper divisors (191971).

1068641 is a wasteful number, since it uses less digits than its factorization.

1068641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1068641 is about 1033.7509371217. The cubic root of 1068641 is about 102.2375917256.

The spelling of 1068641 in words is "one million, sixty-eight thousand, six hundred forty-one".