660485 has 16 divisors (see below), whose sum is σ = 919296. Its totient is φ = 446208.

The previous prime is 660449. The next prime is 660493. The reversal of 660485 is 584066.

660485 = 120² + 121² + ... + 154².

It is not a de Polignac number, because 660485 - 2¹² = 656389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3872 + ... + 4038.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2⁶⁶⁰⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

660485 is a deficient number, since it is larger than the sum of its proper divisors (258811).

660485 is a wasteful number, since it uses less digits than its factorization.

660485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 660485 is about 812.7022825119. The cubic root of 660485 is about 87.0871984325.

The spelling of 660485 in words is "six hundred sixty thousand, four hundred eighty-five".