660616 has 16 divisors (see below), whose sum is σ = 1351440. Its totient is φ = 300240.

The previous prime is 660607. The next prime is 660617. The reversal of 660616 is 616066.

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, 3666 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (84465).

2⁶⁶⁰⁶¹⁶ is an apocalyptic number.

It is an amenable number.

660616 is an abundant number, since it is smaller than the sum of its proper divisors (690824).

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

660616 is a wasteful number, since it uses less digits than its factorization.

660616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524 (or 7520 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 660616 is about 812.7828738353. The cubic root of 660616 is about 87.0929556507.

The spelling of 660616 in words is "six hundred sixty thousand, six hundred sixteen".