1101660 has 96 divisors (see below), whose sum is σ = 3666432. Its totient is φ = 241920.

The previous prime is 1101649. The next prime is 1101671. The reversal of 1101660 is 661011.

It is an interprime number because it is at equal distance from previous prime (1101649) and next prime (1101671).

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 18030 + ... + 18090.

It is an arithmetic number, because the mean of its divisors is an integer number (38192).

2^1101660 is an apocalyptic number.

1101660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1833216).

1101660 is an abundant number, since it is smaller than the sum of its proper divisors (2564772).

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

1101660 is a wasteful number, since it uses less digits than its factorization.

1101660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1101660 is about 1049.5999237805. The cubic root of 1101660 is about 103.2799122647.

Adding to 1101660 its reverse (661011), we get a palindrome (1762671).

It can be divided in two parts, 110 and 1660, that added together give a triangular number (1770 = T₅₉).

The spelling of 1101660 in words is "one million, one hundred one thousand, six hundred sixty".