1667560 has 32 divisors (see below), whose sum is σ = 3836160. Its totient is φ = 652096.

The previous prime is 1667551. The next prime is 1667579. The reversal of 1667560 is 657661.

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 7 ways as a sum of consecutive naturals, for example, 1437 + ... + 2323.

It is an arithmetic number, because the mean of its divisors is an integer number (119880).

2^1667560 is an apocalyptic number.

1667560 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 1667560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918080).

1667560 is an abundant number, since it is smaller than the sum of its proper divisors (2168600).

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

1667560 is a wasteful number, since it uses less digits than its factorization.

1667560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 1667560 is about 1291.3403888983. The cubic root of 1667560 is about 118.5842896417.

It can be divided in two parts, 16 and 67560, that added together give a palindrome (67576).

The spelling of 1667560 in words is "one million, six hundred sixty-seven thousand, five hundred sixty".