1095664 has 30 divisors (see below), whose sum is σ = 2238944. Its totient is φ = 518880.

The previous prime is 1095631. The next prime is 1095671. The reversal of 1095664 is 4665901.

1095664 = T₁₉₂ + T₁₉₃ + ... + T₂₃₈.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 23289 + ... + 23335.

2^1095664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1095664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119472).

1095664 is an abundant number, since it is smaller than the sum of its proper divisors (1143280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1095664 is an equidigital number, since it uses as much as digits as its factorization.

1095664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1095664 is about 1046.7397002120. The cubic root of 1095664 is about 103.0921975868.

Multiplying 1095664 by its sum of digits (31), we get a square (33965584 = 5828²).

1095664 divided by its sum of digits (31) gives a square (35344 = 188²).

The spelling of 1095664 in words is "one million, ninety-five thousand, six hundred sixty-four".