1026664 has 16 divisors (see below), whose sum is σ = 2038500. Its totient is φ = 483072.

The previous prime is 1026661. The next prime is 1026667. The reversal of 1026664 is 4666201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1026661) and next prime (1026667).

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 108900 = 958^2 + 330^2 .

It is not an unprimeable number, because it can be changed into a prime (1026661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3639 + ... + 3910.

2^1026664 is an apocalyptic number.

It is an amenable number.

1026664 is a deficient number, since it is larger than the sum of its proper divisors (1011836).

1026664 is a wasteful number, since it uses less digits than its factorization.

1026664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7572 (or 7568 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1026664 is about 1013.2442943338. The cubic root of 1026664 is about 100.8810153255.

The spelling of 1026664 in words is "one million, twenty-six thousand, six hundred sixty-four".