1051666 has 16 divisors (see below), whose sum is σ = 1967040. Its totient is φ = 409680.

The previous prime is 1051663. The next prime is 1051697. The reversal of 1051666 is 6661501.

It is a super-2 number, since 2×1051666² = 2212002751112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3261 + ... + 3568.

It is an arithmetic number, because the mean of its divisors is an integer number (122940).

2^1051666 is an apocalyptic number.

1051666 is a deficient number, since it is larger than the sum of its proper divisors (915374).

1051666 is a wasteful number, since it uses less digits than its factorization.

1051666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6849.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1051666 is about 1025.5076791521. The cubic root of 1051666 is about 101.6933633495.

It can be divided in two parts, 105 and 1666, that added together give a palindrome (1771).

The spelling of 1051666 in words is "one million, fifty-one thousand, six hundred sixty-six".