660534 has 16 divisors (see below), whose sum is σ = 1509888. Its totient is φ = 188712.

The previous prime is 660529. The next prime is 660547. The reversal of 660534 is 435066.

It is a d-powerful number, because it can be written as 6³ + 6⁶ + 5⁷ + 0 + 3¹² + 4⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7822 + ... + 7905.

It is an arithmetic number, because the mean of its divisors is an integer number (94368).

2⁶⁶⁰⁵³⁴ is an apocalyptic number.

660534 is an abundant number, since it is smaller than the sum of its proper divisors (849354).

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

660534 is a wasteful number, since it uses less digits than its factorization.

660534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15739.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 660534 is about 812.7324282936. The cubic root of 660534 is about 87.0893519849.

The spelling of 660534 in words is "six hundred sixty thousand, five hundred thirty-four".