1098669 has 24 divisors (see below), whose sum is σ = 1739232. Its totient is φ = 611520.

The previous prime is 1098667. The next prime is 1098673. The reversal of 1098669 is 9668901.

It is not a de Polignac number, because 1098669 - 2¹ = 1098667 is a prime.

It is a super-2 number, since 2×1098669² = 2414147143122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5479 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (72468).

2^1098669 is an apocalyptic number.

It is an amenable number.

1098669 is a deficient number, since it is larger than the sum of its proper divisors (640563).

1098669 is a wasteful number, since it uses less digits than its factorization.

1098669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1098669 is about 1048.1741267557. The cubic root of 1098669 is about 103.1863594434.

It can be divided in two parts, 109 and 8669, that added together give a palindrome (8778).

The spelling of 1098669 in words is "one million, ninety-eight thousand, six hundred sixty-nine".