660536 has 8 divisors (see below), whose sum is σ = 1238520. Its totient is φ = 330264.

The previous prime is 660529. The next prime is 660547. The reversal of 660536 is 635066.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41276 + ... + 41291.

It is an arithmetic number, because the mean of its divisors is an integer number (154815).

2⁶⁶⁰⁵³⁶ is an apocalyptic number.

It is an amenable number.

660536 is a deficient number, since it is larger than the sum of its proper divisors (577984).

660536 is a wasteful number, since it uses less digits than its factorization.

660536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82573 (or 82569 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 660536 is about 812.7336587099. The cubic root of 660536 is about 87.0894398827.

The spelling of 660536 in words is "six hundred sixty thousand, five hundred thirty-six".