660112 has 10 divisors (see below), whose sum is σ = 1278998. Its totient is φ = 330048.

The previous prime is 660103. The next prime is 660119. The reversal of 660112 is 211066.

It can be written as a sum of positive squares in only one way, i.e., 512656 + 147456 = 716^2 + 384^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 41257 = 660112 / (6 + 6 + 0 + 1 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (660119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20613 + ... + 20644.

2⁶⁶⁰¹¹² is an apocalyptic number.

It is an amenable number.

660112 is a deficient number, since it is larger than the sum of its proper divisors (618886).

660112 is a wasteful number, since it uses less digits than its factorization.

660112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41265 (or 41259 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 660112 is about 812.4727687744. The cubic root of 660112 is about 87.0708015717.

Adding to 660112 its reverse (211066), we get a palindrome (871178).

It can be divided in two parts, 660 and 112, that multiplied together give a triangular number (73920 = T₃₈₄).

The spelling of 660112 in words is "six hundred sixty thousand, one hundred twelve".