1086644 has 12 divisors (see below), whose sum is σ = 2048004. Its totient is φ = 501504.

The previous prime is 1086641. The next prime is 1086647. The reversal of 1086644 is 4466801.

It is an interprime number because it is at equal distance from previous prime (1086641) and next prime (1086647).

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 702244 = 620^2 + 838^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10397 + ... + 10500.

It is an arithmetic number, because the mean of its divisors is an integer number (170667).

2^1086644 is an apocalyptic number.

It is an amenable number.

1086644 is a deficient number, since it is larger than the sum of its proper divisors (961360).

1086644 is a wasteful number, since it uses less digits than its factorization.

1086644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914 (or 20912 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1086644 is about 1042.4221793496. The cubic root of 1086644 is about 102.8085172128.

The spelling of 1086644 in words is "one million, eighty-six thousand, six hundred forty-four".