1660107 has 4 divisors (see below), whose sum is σ = 2213480. Its totient is φ = 1106736.

The previous prime is 1660103. The next prime is 1660111. The reversal of 1660107 is 7010661.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1660103) and next prime (1660111).

It is not a de Polignac number, because 1660107 - 2² = 1660103 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660103) 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 3 ways as a sum of consecutive naturals, for example, 276682 + ... + 276687.

It is an arithmetic number, because the mean of its divisors is an integer number (553370).

2^1660107 is an apocalyptic number.

1660107 is a deficient number, since it is larger than the sum of its proper divisors (553373).

1660107 is an equidigital number, since it uses as much as digits as its factorization.

1660107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553372.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1660107 is about 1288.4513960565. The cubic root of 1660107 is about 118.4073587388.

Adding to 1660107 its reverse (7010661), we get a palindrome (8670768).

The spelling of 1660107 in words is "one million, six hundred sixty thousand, one hundred seven".