1661114 has 16 divisors (see below), whose sum is σ = 3067008. Its totient is φ = 657072.

The previous prime is 1661111. The next prime is 1661117. The reversal of 1661114 is 4111661.

It is an interprime number because it is at equal distance from previous prime (1661111) and next prime (1661117).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4382 + ... + 4745.

It is an arithmetic number, because the mean of its divisors is an integer number (191688).

2^1661114 is an apocalyptic number.

1661114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1661114 is a deficient number, since it is larger than the sum of its proper divisors (1405894).

1661114 is a wasteful number, since it uses less digits than its factorization.

1661114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9149.

The product of its digits is 144, while the sum is 20.

The square root of 1661114 is about 1288.8421160096. The cubic root of 1661114 is about 118.4312953705.

Adding to 1661114 its reverse (4111661), we get a palindrome (5772775).

The spelling of 1661114 in words is "one million, six hundred sixty-one thousand, one hundred fourteen".