1090664 has 8 divisors (see below), whose sum is σ = 2045010. Its totient is φ = 545328.

The previous prime is 1090627. The next prime is 1090681. The reversal of 1090664 is 4660901.

It can be written as a sum of positive squares in only one way, i.e., 1085764 + 4900 = 1042^2 + 70^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 68159 + ... + 68174.

2^1090664 is an apocalyptic number.

It is an amenable number.

1090664 is a deficient number, since it is larger than the sum of its proper divisors (954346).

1090664 is a wasteful number, since it uses less digits than its factorization.

1090664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136339 (or 136335 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1090664 is about 1044.3486008034. The cubic root of 1090664 is about 102.9351399870.

The spelling of 1090664 in words is "one million, ninety thousand, six hundred sixty-four".