1098755 has 8 divisors (see below), whose sum is σ = 1506912. Its totient is φ = 753408.

The previous prime is 1098737. The next prime is 1098787. The reversal of 1098755 is 5578901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098755 - 2¹⁸ = 836611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 31393 = 1098755 / (1 + 0 + 9 + 8 + 7 + 5 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15662 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (188364).

2^1098755 is an apocalyptic number.

1098755 is a deficient number, since it is larger than the sum of its proper divisors (408157).

1098755 is an equidigital number, since it uses as much as digits as its factorization.

1098755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31405.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 1098755 is about 1048.2151496711. The cubic root of 1098755 is about 103.1890517300.

The spelling of 1098755 in words is "one million, ninety-eight thousand, seven hundred fifty-five".