1005668 has 6 divisors (see below), whose sum is σ = 1759926. Its totient is φ = 502832.

The previous prime is 1005661. The next prime is 1005677. The reversal of 1005668 is 8665001.

1005668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 937024 + 68644 = 968^2 + 262^2 .

It is a super-2 number, since 2×1005668² = 2022736252448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125705 + ... + 125712.

It is an arithmetic number, because the mean of its divisors is an integer number (293321).

2^1005668 is an apocalyptic number.

It is an amenable number.

1005668 is a deficient number, since it is larger than the sum of its proper divisors (754258).

1005668 is a wasteful number, since it uses less digits than its factorization.

1005668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251421 (or 251419 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1005668 is about 1002.8299955626. The cubic root of 1005668 is about 100.1885774951.

The spelling of 1005668 in words is "one million, five thousand, six hundred sixty-eight".