660612 has 12 divisors (see below), whose sum is σ = 1541456. Its totient is φ = 220200.

The previous prime is 660607. The next prime is 660617. The reversal of 660612 is 216066.

It is an interprime number because it is at equal distance from previous prime (660607) and next prime (660617).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660612.

It is not an unprimeable number, because it can be changed into a prime (660617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27514 + ... + 27537.

2⁶⁶⁰⁶¹² is an apocalyptic number.

It is an amenable number.

660612 is an abundant number, since it is smaller than the sum of its proper divisors (880844).

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

660612 is a wasteful number, since it uses less digits than its factorization.

660612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55058 (or 55056 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 660612 is about 812.7804131498. The cubic root of 660612 is about 87.0927798690.

Adding to 660612 its reverse (216066), we get a palindrome (876678).

The spelling of 660612 in words is "six hundred sixty thousand, six hundred twelve".