1088865 has 12 divisors (see below), whose sum is σ = 1887444. Its totient is φ = 580704.

The previous prime is 1088851. The next prime is 1088903. The reversal of 1088865 is 5688801.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 767376 = 567^2 + 876^2 .

It is not a de Polignac number, because 1088865 - 2¹⁰ = 1087841 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12054 + ... + 12143.

It is an arithmetic number, because the mean of its divisors is an integer number (157287).

2^1088865 is an apocalyptic number.

1088865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1088865 is a deficient number, since it is larger than the sum of its proper divisors (798579).

1088865 is a wasteful number, since it uses less digits than its factorization.

1088865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24208 (or 24205 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1088865 is about 1043.4869428987. The cubic root of 1088865 is about 102.8785132514.

It can be divided in two parts, 1088 and 865, that added together give a triangular number (1953 = T₆₂).

The spelling of 1088865 in words is "one million, eighty-eight thousand, eight hundred sixty-five".