660633 has 12 divisors (see below), whose sum is σ = 909744. Its totient is φ = 426400.

The previous prime is 660619. The next prime is 660643. The reversal of 660633 is 336066.

It is not a de Polignac number, because 660633 - 2⁴ = 660617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (660643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4978 + ... + 5108.

It is an arithmetic number, because the mean of its divisors is an integer number (75812).

2⁶⁶⁰⁶³³ is an apocalyptic number.

It is an amenable number.

660633 is a deficient number, since it is larger than the sum of its proper divisors (249111).

660633 is a wasteful number, since it uses less digits than its factorization.

660633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 660633 is about 812.7933316656. The cubic root of 660633 is about 87.0937027148.

Adding to 660633 its reverse (336066), we get a palindrome (996699).

It can be divided in two parts, 66063 and 3, that added together give a palindrome (66066).

The spelling of 660633 in words is "six hundred sixty thousand, six hundred thirty-three".